●High Speed Steel (HSS) Bi-metal saw blades are made of  high strength hard alloy steel, measuring 2 mm thick.
●The optimized tooth design of the saws allows for improved cutting efficiency, cleaner and smoother cutting, and higher precision.
●The chip removal groove on the side of the hole saw rapidly discharges chips for easier clean-up.
●This set includes 11 Bi-metal hole saw blades and a range of drill bits and accessories, making it perfect for cutting holes in metal, wood, PVC board, plastic, and drywall.
●CONTENTS: 
11 x  Bi-Metal Hole Saw Blades-25/32''(20mm),7/8"(22mm),1"(25mm), 1-1/8"(29mm),1-3/8"(35mm),1-9/16"(40mm),1-3/4"(44mm), 2"(51mm), 2-1/4"(57mm), 2-3/8"(60mm), 2-11/16"(68mm). 
2 x Mandrels
3 x Drill Bits 
1 x Hex Key
This set is ideal for Plumbers.