GEARWRENCH 8Pc Metric Hex Insert Bit Set - Suits 6 & 12 Point Wrenches 8749 7/8"3300c spark plug sockets -

7/8"3300c spark plug sockets - 16

Flute length 62mm

For the production of high precision concentrically centred countersinks in most metals where pilot holes have been pre-drilled

Ideal for use with custom tool and work holder designs and for specialized machining applications

GEARWRENCH 8Pc Metric Hex Insert Bit Set - Suits 6 & 12 Point Wrenches 8749 7/8"3300c spark plug sockets -GEARWRENCH 8Pc Metric Hex Insert Bit Set Suits 6 & 12 Point Wrenches 81550 GEARWRENCH ratcheting wrench insert bits are intended to be inserted in the box end of a wrench and functions like a low profile bit socket providing great access to hard to reach fasteners. Our insert bits fit in 8mm, 12mm, or 15mm 6 and 12 point box end static or ratcheting wrenches. The 8 piece metric hex insert bit set comes with a tray for storage and includes sizes 3mm,