Draper no 1 chuck key with 10 teeth draper 92485 type 1 chuck key with 10 gear teeth suitable for medium to heavy duty chucks with 6mm approx pilot hole can be used with all chucks with the above specification including machine tool chucks lathes pillar drills etc and draper stock nos 60491 and 60495 sae 1008 steel hardened and tempered display packed draper 92485 no 1 chuck key with 10 teeth