Standard Plumbing Supply 703456 DISSTON COMPANY Bi Hole Saw, 6" Master Mechanic, 6" Bi-Metal Hole Saw, 4-1/8" Arbor, High Speed Steel Cutting Edge, 1-1/2" Depth Of Cut Provides Easy Cutting In The Toughest Applications, Features 3/16" Backing Plate Which Eliminates Need For Separate Drive Plate On Hole Saws Under 3" In Diameter Prevents Mandrel Strip Out, Designed To Cut Hard Soft Wood, Nail Embedded Wood, Stainless Steel, Pipe, Rubber Conduit, Can Be Used With 3/8" Bi-Metal Saw Mandrel, Bulk. Features The product is a MM 6" Bi Hole Saw Purpose of use for Power Tool Accessories, hole-saw-sets Manufactured in China USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.