Adjustable drill guide,3 In 1Dowel Jig Kit, easy to meet your drill requirements.Forged by premium tool steel, the drill bushings are of good strength and long durability. Strict and fine workmanship ensures high precision and long service life. Equpped with a dedicated clamp board, you do not need to use anlocking pliers to clamp the wood board when puching holes in the side,Come with 6/8/10mm drill bushings and twist drill to accurately drill corresponding size of holes.