17-Piece 12.5mm Drive Impact Socket Set Cr-Mo Steel Auto Repair Tool Kit

17-piece 12.5mm drive impact socket set — Cr-Mo steel, 16 sockets (10-32mm) + 5″ extension bar, full heat treatment. Industrial-grade for auto repair and machinery assembly. Factory direct, OEM available.

Product Description

17-Piece 12.5mm Drive Impact Socket Set — a professional-grade pneumatic tool kit designed for heavy-duty applications including automotive repair, mechanical assembly, and heavy equipment maintenance. The set includes 16 impact sockets (10-32mm range) plus one 5-inch impact extension bar, covering the vast majority of bolt and nut removal and installation needs. Forged from high-strength chromium-molybdenum (Cr-Mo) steel with full-body heat treatment, it delivers exceptional impact toughness — standing up to the high torque of impact wrenches and air guns without breaking or deforming. Surface treatment (sandblasted or black oxide) provides wear and corrosion resistance. Bonus O-rings and retaining pins included for easy replacement and maintenance. Industrial-grade quality — essential for auto repair shops, machinery plants, and heavy equipment maintenance.

Product Features

1. Cr-Mo Steel Forging — High Impact Strength

 All sockets are forged from chromium-molybdenum (Cr-Mo) steel, delivering significantly higher impact toughness and torsional strength compared to standard chrome-vanadium sockets. They withstand continuous high-torque impact from pneumatic wrenches and impact guns without cracking or deforming — far outlasting ordinary sockets.

2. 16 Sockets — Comprehensive Size Coverage

16 impact sockets cover sizes from 10mm to 32mm — including 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 27, 30, and 32mm. From car tires and chassis suspension to engine repair and mechanical assembly, all common bolt sizes are covered in one set.

3. 5″ Impact Extension Bar Included

Includes one 5-inch (125mm) impact extension bar — also forged from Cr-Mo steel and designed specifically for impact applications. Reaching bolts in deep or tight spaces becomes effortless. The extension bar connects sockets and impact wrenches, greatly expanding work reach and accessibility.

4. Bonus O-Rings & Retaining Pins

The set includes bonus O-rings (20×4mm, 25×4mm) and retaining pins (20×3mm, 25×3mm) for securing sockets to pneumatic tools. Wear parts can be replaced on your own, extending the service life of the entire set without needing to purchase extra accessories.

5. Full-Body Heat Treatment — Uniform Hardness

Every socket undergoes rigorous full-body quenching and tempering heat treatment, ensuring uniform hardness throughout — both surface and core meet high-strength requirements. These aren’t surface-hardened “paper tigers” — they deliver genuine impact and wear resistance from inside out, industrial-grade quality you can trust.

6. Surface Treatment — Rust & Wear Resistant

Sandblasted or black oxide surface treatment not only gives a professional, understated appearance but also forms a dense protective oxide layer that effectively seals out air and moisture to prevent rust. The optimized surface texture provides secure grip and prevents slippage during use.

Specifications

Parameter Details
Product No. W07042
Drive Size 12.5mm (1/2″) Drive
Total Pieces 17 pcs
Socket Material Cr-Mo Chromium-Molybdenum Steel
Heat Treatment Full-Body Quench & Temper
Surface Finish Sandblasted / Black Oxide

Set Contents

Category Size Qty
Impact Sockets 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm, 22mm, 24mm, 27mm, 30mm, 32mm 16 pcs
Impact Extension Bar 5″ (125mm) 1 pc
O-Rings 20×4mm, 25×4mm Assorted
Retaining Pins 20×3mm, 25×3mm Assorted

Packaging Info

Parameter Details
Inner Pack 1 set
Carton Quantity 4 sets
Weight Per Set 2.80kg
Gross Weight Per Carton 12kg
Net Weight Per Carton 11.2kg

Applications

  •  Automotive Repair: Tire removal, chassis repair, suspension work, engine bolts, transmission service
  •  Mechanical Assembly: Industrial equipment assembly, production line maintenance, fastener installation
  •  Heavy Equipment: Excavators, loaders, bulldozers — repair and maintenance of construction machinery
  •  Commercial Vehicle Service: Trucks, buses, and large vehicle fleet maintenance
  •  Plant Maintenance: Daily inspection, upkeep, and parts replacement for factory machinery
  •  Agricultural Equipment: Tractor, harvester, and farm machinery repair
  •  DIY Enthusiasts: Personal vehicle maintenance and modification projects

Why Choose Us

Direct-from-source factory with controllable quality.

We operate our own socket forging and heat treatment production lines, maintaining full control from raw material cutting and forging through heat treatment and surface finishing. Every product undergoes rigorous torque testing and hardness inspection to ensure consistent, reliable quality.

Factory-direct supply, price advantage.

Skip the trading middlemen — direct factory supply. Bulk orders enjoy tiered pricing with volume discounts. This gives you stronger price competitiveness and higher profit margins in your local market.

Chrome-molybdenum material, industrial-grade quality.

The entire line is forged from Cr-Mo chromium-molybdenum steel — a world apart from ordinary carbon steel or low-quality alternatives. Impact toughness, torsional strength, and fatigue life all meet industrial-grade standards for sustained heavy-duty impact work.

Stable supply, customization supported.

Standard models are kept in stock for fast shipping of small batch orders. We support OEM/ODM customization including laser marking, custom set configurations, and custom packaging — meeting different brand and market requirements.

Extensive experience in foreign trade exports.

Our products are exported to Southeast Asia, the Middle East, Africa, Europe, and the Americas. We’re familiar with market access standards and packaging requirements across different regions. Our professional foreign trade team provides end-to-end service with efficient communication and smooth delivery.

FAQ

Q1: What’s the difference between impact sockets and regular sockets? Can I use impact sockets on a regular wrench?
A: The main differences are material and wall thickness: impact sockets are forged from Cr-Mo steel with thicker walls to withstand high-torque impact; regular sockets are typically Cr-V steel with thinner walls for low-torque manual use only. Impact sockets can be used on regular manual wrenches (overkill but perfectly safe), but regular sockets should never be used on impact wrenches — they can shatter and fly off, causing serious injury.

Q2: Is this 17-piece set enough for daily auto repair? Do I need to buy additional sizes separately?
A: This 17-piece set includes 16 common socket sizes (10-32mm) plus a 5″ extension bar, covering over 90% of bolt removal needs in automotive repair — more than sufficient for routine maintenance, tire changes, and chassis work. If you need smaller sizes (like 8mm, 9mm) or larger sizes (above 33mm), you can add those separately based on specific vehicle models and repair scenarios.

Q3: What’s the difference between Cr-Mo and Cr-V? Which is better?
A: Cr-Mo (chromium-molybdenum) and Cr-V (chromium-vanadium) are two common tool steel families: Cr-Mo offers superior impact toughness and high-temperature strength, making it the preferred material for pneumatic/impact tools; Cr-V has good hardness and wear resistance, suitable for hand tools. For impact sockets that must withstand repeated shock, Cr-Mo is clearly better and lasts much longer. Cr-V sockets are cheaper but can easily crack when used with impact tools.

Q4: Do the sockets rust easily? How should I maintain them?
A: These sockets feature sandblasted or black oxide surface treatment with good rust resistance — they won’t easily rust under normal use and storage. Maintenance tips: Wipe clean of oil and moisture after use, store in a dry, ventilated area; apply a light coat of rust-preventive oil for long-term storage; avoid prolonged immersion in water or corrosive liquids.

Q5: Can I customize the set contents? I want a different combination of sizes.
A: Yes, customization is available. We can adjust socket size combinations, add or remove pieces, include extensions/universal joints/adapters, and customize packaging — all based on your requirements. Pricing and MOQ depend on your specific customization needs. Feel free to contact our sales team for details.