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Red insulated 16-piece 3/8 inch drive socket set in plastic case

WIHA

Wiha 31491 16 Piece Insulated 3/8" Drive Socket Set

SKU CH-6K9Y-AK3FF

A 16-piece insulated 3/8-inch drive socket set covering SAE and metric sizes from 5/16 to 3/4 inch and 8 to 19 mm in 12-point chrome

  • Product typeTarps
  • 16-piece set covers SAE and metric sizes for versatile fastening
  • 12-point sockets grip fasteners from multiple angles for easier engagement
  • Insulated 3/8" drive protects against electrical hazards during live work
  • Chrome finish resists corrosion for long-lasting durability
  • Compact box keeps all 16 sockets organised and portable

Insulated 3/8" Drive Socket Set

The Wiha 31491 set contains sixteen 12-point sockets for 3/8 inch drive tools. It covers both SAE and metric fasteners in a single insulated box. The range spans 5/16 to 3/4 inch and 8 to 19 mm sizes. Every socket carries Wiha insulation for electrical work.

Electricians and hybrid-fleet mechanics

Technicians who service live low-voltage panels or hybrid vehicles will value the insulated rating. The set omits deep or flex sockets, so technicians needing reach into recessed bolts must look elsewhere. It also lacks a ratchet or extensions, requiring separate purchase.

Sixteen-piece 12-point coverage

The box delivers exactly sixteen sockets in 12-point geometry across the listed inch and metric sizes. No deep, flex or impact variants are included. Buyers needing more pieces or different drive profiles should consider other kits.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $307.99
Pricier than about 91% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameWiha
Product typeTarps

Questions about this item

Which 3/8" drive ratchet or torque wrench do I need to turn these 12-point sockets?

Any 3/8" square-drive ratchet, breaker bar or torque wrench will engage the 12-point sockets in this 16-piece set.

Can I mix these insulated sockets with my existing non-insulated 3/8" extensions and adaptors?

Yes, the 3/8" drive square on each socket matches standard 3/8" extensions, universal joints and adaptors you already own.

How do I confirm the insulation on each socket is intact before working on live circuits?

Visually inspect the red and yellow insulation layers for cuts, cracks or wear; if the yellow layer shows through the red, replace that socket.

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