Description Made in the U.S.A. with global materials, these Bi-Metal Hole Saws last up to 50% longer* and feature patented toothforms that help deliver fast cuts and long-life drilling through wood, metal, and plastic. Their large, continuous slot provides leverage for easy plug ejection and removal. The durable, bi-metal construction provides the versatility to drill a range of materials and a deeper saw design allows for cutting 2-by dimensional lumber in one pass.Door lock kit utilizes C-clamp design with tool-free clamping and no surface damageDoor lock kit utilizes alignment window and taller bushings to deliver accurate height placement and straight drillingDoor lock kit includes two adjustable bushings which accept both standard backsets and both common door thicknessesProduct Length: 0.1 inProduct Height: 0.2 inProduct Width: 0.16 inApplication Material: WoodNumber of Pieces: 4Product Weight: 0.7 lbs