7 PIECE ROTOBROACH CUTTING KIT RB7KIT | eBaydiy Tools

Heavy-duty hole cutter for use on steel, sheet metal, wood and plastic
Cuts material up to 1/4\” thick using 1/4\”, 3/8\” or 1/2\” drills
Spring-loaded pilot guide in arbor eliminates predrilling, and cutters are designed to prevent chip clogging
Great for body shops, frame straighteners, custom building and detailing, rust proofers and under coaters
Includes sizes: 5/16\”, 3/8\”, 7/16\”, 1/2\”, 9/16\”, 5/8\” and 3/4\” diameter cutters