The No. 226 3/16" adaptor adapts our No. 224 3/16" 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.

• Adapts 3/16” solid carbide drill bits to a standard electric drill chuck
• Works with Crain No. 224 3/16” Solid Carbide Drill Bits
• Shank diameter is 1/4”
• Internal collet tightens down on the drill bit to hold it in the adaptor