5pcs Titanium Plated HSS HSS Hole Saws for Stainless Steel Alloy Metal Wood - 16mm/18.5mm/20mm/25mm/30mm

Characteristics : Material: HSS 6542 (M2). Color: Golden (As Pictures Shown) Outer diameter: about 16mm 18.5mm 20mm 25mm 30mm. Contents : 1 x 16mm hole saw. 1 x 18.5mm hole saw. 1 hole saw 20 mm. 1 hole saw 25 mm. 1 hole saw 30 mm. 5 hex keys. Remark : 1. Do not move cutting parts. Please fix it firmly and cut it at a right angle. 2. Cut metal slowly without hitting it and the larger a hole saw the greater the number of rotations. 3. Do not overtighten the grub screws or they will fall out. 4. Coolant is recommended. Clean up all debris before drilling.