Draper type 1 chuck key 11 teeth draper 92451 type 1 chuck key with 11 gear teeth suitable for light duty chucks with 6mm approx pilot hole can be used with all chucks with the above specification including draper stock nos 60491 and 60495 sae 1008 steel hardened and tempered display packed draper 92451 type 1 chuck key 11 teeth