Amazon Basics Bi Metal High Speed 9 Piece Steel Hole Saw Kit With Carry Case 20 mm to 68 mm, Black, 25/32" 2 11/16

9-piece high speed bi-metal steel hole saw kit for cutting mild steel, aluminium, plastic and plasterboard Ideal for carpentry, construction, plumbing and more Constructed with HSS-M3 bi-metal material with a powder-coated finish for smooth cuts and durability Durable carrying case for storage and easy portability Includes six hole saws in sizes 25/32 inch (20mm), 1 inch (25mm), 1-3/8 inch (35mm), 1-9/16 inch (40mm), 2 inch (51mm), and 2-11/16 inch (68mm); one 1/4"hex arbor with 75mm pilot drill to connect 14-30mm hole saw, and one 7/16"hex arbor with 75mm pilot drill to connect 32-152mm hole saw, and one hex key Case dimensions: 24.9 x 16.5 x 6 cm (LxWxH) Note: When cutting metal sheets, please refer to the instruction manual for recommended cutting speeds based on different hole saw sizes and materials Small Mandrel Removal Tip: After cutting, the small mandrel may tighten due to torque and friction. Please use a wrench or appropriate tool to loosen and remove the it from the hole saw.