10Pcs16-53mm Alloy Hole Saw Set Carbide Tip TCT Metal Cutter Core Drill Bit Kits for Stainless Steel Metal Drilling Crown

Material: Made of tungsten carbide alloy, with high hardness, rust proof and sturdy, sharp gears, labor saving and long using life

Excellent design: Alloy hole saw designed with multi-tooth gear, built a center alloy drill bits, easy to precise positioning, and ensure hole saw firmly fixed during working. Also, come with a spring on the center drill bit, avoid stucking, more smoothly.

Size1: 16mm , 18mm , 19mm , 22mm , 25mm , 30mm , 35mm , 42mm , 50mm , 53mm

Size2: 16mm , 18mm , 20mm , 22mm , 25mm , 26mm , 28mm , 30mm , 40mm , 50mm

• Widely application: These Alloy Hole saw steel bit can install on electric hand drill, bench drill, machine drill and work on stainless steel, iron plate, aluminum plate, casting, (less than 3MM(3/25”)) etc.