Draper 6 35mm x 81mm spare hss holesaw pilot drill for hsa1 and hsa sds draper 53056 for use with holesaw arbors stock nos 52982 and 52992 size 1 4 6 3mm diameter x 81mm long display packed draper 53056 6 35mm x 81mm spare hss holesaw pilot drill for hsa1 and hsa sds