A Core deposit is a form of deposit you pay until returning your old part. If you don't have the core at the time of purchase, you must pay the core charge. That charge is refunded to you when you return the core.
1-1/16" x 1/4" A15 (Bulk). Max RPM: 50,510. Shank mounted points and grinding wheels are made from durable, high-grade 60 grit aluminum oxide. Perfect for grinding, polishing or deburring ferrous metals or other hard surfaces. For use with 1/4" (6.35mm) chuck high-speed drills. Especially useful where larger wheels will not fit or where small abrasive wheels wear out too quickly.