This is the recommended tool for the following parts: CSSM12X1.5, CSSM12X1.25, CSSLM12X1.5, CSSLM12X1.25, CSXM12X1.5, CSXM12X1.25, CSXLM12X1.5, CSXLM12X1.25
SRM1215D is a step drill for accurate stepped bores before tapping and insert installation in lightweight materials. This is an old Anemo part. Please use CSD1332