This set comprises 5 Carbide Teeth Hole Saws, 2 Arbors, 4 Cobalt Pilot Bits and a Storage Case. With carbide-welded teeth, these Carbide Teeth Hole Saws are capable of withstanding more demanding and extreme applications than standard bi-metal hole saws. Each Hole Saw can cut through stainless steel, hard metals, nail-embedded wood, cement sheet, fibreglass, wood and plastic. Lower TPI improves durability for cutting metal. Anti-friction coating reduces corrosion, friction, and gumming which aids in maximising cutting speeds. The included Cobalt Pilot Bits can drill into the same materials each Hole Saw can cut into. They’re made to withstand extreme levels of heat and abrasion that’s usually generated from drilling into stainless steel and hard metals. All accessories in this Set fit into the included Storage Case for easy transport and storage. This Case has a customizable layout to match your needs. Set includes: 22mm Carbide Teeth Hole Saw 29mm Carbide Teeth Hole Saw 35mm Carbide Teeth Hole Saw 51mm Carbide Teeth Hole Saw 64mm Carbide Teeth Hole Saw 14-30mm Arbor 32-175mm Arbor 4 x 6.4mm Cobalt Pilot Bits | Kango Hole Shot 9 Piece Carbide Teeth Hole Saw Set