The No. 225 1/8" adaptor Adapts our No. 223 1/8" Solid Carbide Drill Bits to work in a standard electric drill chuck. The shank diameter on the adaptor is 1/4 inch. An internal collet tightens down on the drill bit to hold it in the adaptor. Made from steel, heat treated for wear resistance, and zinc plated. Net weight: 2 oz.

• Adapts 1/8" solid carbide drill bits to a standard electric drill chuck.
• Works with Crain No. 223 1/8" Solid Carbide Drill Bits.
• Shank diameter is 1/4".
• Internal collet tightens down on the drill bit to hold it in the adaptor.