Ko-Ken KO3305M06 12-Point Deep Socket, 6 mm, 3/8 in Drive

The Ko-Ken 3305M is a 12-point deep socket with a 3/8 in square drive. (manufacturer-stated)

Sizes run from 6 to 27 mm.

Lengths are 55 and 65 mm. (manufacturer-stated)

Each model is listed in the table below with its specifications.

Where this product is used

• Turning metric nuts and bolts with a 3/8 in drive ratchet or handle
• Nuts on long studs and recessed fasteners where a standard socket will not reach
• General workshop and maintenance fastening

Features

• 3/8 in square drive (manufacturer-stated)
• 12-point (bi-hexagon) opening (manufacturer-stated)
• Deep body (manufacturer-stated)

Common specifications

Key specifications

Lengths and weights are manufacturer-stated (Ko-ken catalogue 2025-26).

Selecting the right option

Match the 3/8 in square drive to your ratchet or handle, then choose the size that fits the fastener. Choose the deep series when a standard socket will not reach the fastener, for example a nut on a long stud. The catalogue prints one dimension table for the 6-point and 12-point series (3305M and 3300M), so the lengths and weights shown here are the figures printed for both. (manufacturer-stated) The catalogue's safety notes say to select impact sockets only for electric or air impact wrenches and not to substitute hand sockets for impact sockets; this series is listed in the hand sockets section of the catalogue. (manufacturer-stated)

Related products

Related Ko-Ken products: Ko-Ken 3300M 6-Point Deep Socket, Metric Sizes, 3/8 in Drive, Ko-Ken 3350M Nut Grip Deep Socket, Metric Sizes, 3/8 in Drive, Ko-Ken 3405M 12-Point Socket, Metric Sizes, 3/8 in Drive, Ko-Ken 3305A 12-Point Deep Socket, Inch Sizes, 3/8 in Drive and Ko-Ken 3000-60 Phillips Bit Socket, 3/8 in Drive.