Master Mechanic, 2-1/4", Bi-Metal Hole Saw, High Speed Steel Cutting Edge, 1-1/2" Depth Of Cut Provides Easy Cutting In The Toughest Applications, Designed To Cut Hard & Soft Wood, Nail Embedded Wood, Stainless Steel, Pipe, Rubber & Conduit, Can Be Used With TV #102-486, TV #752-980 & TV #779-942, Mandrel Not Included, Bulk.