Ko-Ken KO166S5 Blade-Through Slotted Screwdriver, 5 mm

The Ko-Ken 166S is a blade-through slotted screwdriver in 3 sizes: 5, 6 and 8 mm.

The catalogue lists the 166S under the heading Screwdrivers (Blade-Through type) and prints the sizes 5, 6 and 8 without a unit or a label (manufacturer-stated). The mm unit comes from the store listing.

The catalogue prints no handle, material or standard details for this series, so none are published here.

Each size is listed in the table below with its length and weight.

Where this product is used

• Driving and removing slotted screws
• Maintenance and assembly work
• Workshop work

Features

• Sizes 5, 6 and 8 mm
• Blade-through type (manufacturer-stated)
• Lengths of 175, 210 and 270 mm (manufacturer-stated)
• Weights from 78 to 203 g (manufacturer-stated)

Key specifications

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

Selecting the right option

Choose the size that suits the screw slot; the table lists each size with its length and weight.

Related products

Related Ko-Ken products: Ko-Ken 168S Slotted Screwdriver, 5 to 8 mm, Ko-Ken 166P Blade-Through Phillips Screwdriver, PH1 to PH3, Ko-Ken 166PS/6 Blade-Through Phillips and Slotted Screwdriver Set, 6 Pieces and Ko-Ken 168P Phillips Screwdriver, PH1 to PH3.