Finder Tungsten Hole Saw Set Core Drill Bit

A set of hole cutters made from carbon steel tungsten carbide tipped. Suitable for cutting several materials such as marble, stone, tile, ceramic, plastic, etc. - Set includes 5x hole saws, 1x universal arbor, 1x pilot drill. - Sizes include: 33mm, 53mm, 67mm, 73mm, 83mm. - Drill depth: 2-1/4". - Speed: Depends on diameter and material you are going to cut, as an avarage 1000RPM. for the diameter 83mm when cutting marble, smaller diameter needs higher speed.