Never used. Knock out slots for easy core removal. High speed steel cutting edge welded to shatter-proof steel back for greater safety. Cut depth 1-1/8".
Mac Tools Metal Cutting Hole Saw 1-3/4 inch #HS528
Mac Tools Metal Cutting Hole Saw 1-7/16 inch #HS523
Mac Tools Metal Cutting Hole Saw 11/16 inch #HS511
Mac Tools Metal Cutting Hole Saw 1-5/8 inch #HS526
Mac Tools Metal Cutting Hole Saw 1-1/16 inch #HS517
Mac Tools Metal Cutting Hole Saw 1-9/16 inch #HS525
