6 Size Precision Doweling Jig Kit, Assures Accurate Line Up Of Dowel Holes In Furniture & Carpentry, Revolving Turret Has 6 Twist Drill Sizes, Just Lift & Turn Turret Lock In Guide Hole, Guide Bars Are Graduated For Fast Positioning Of Hole Center Points, Clamp Screw Locks Tool Onto Work From 0" To 4" In Width, Rust Resistant Plated Turret & Parts & Painted Die Cast Body, Kit Includes: Instructions, 1 Doweling Jig, 3 Brad Point Bits (1/4" 5/16" 3/8") Dowel & Tenon Centers Set from 3/16" ID to 1/2" OD, 3 Drill Stops (1/4" 5/16" 3/8"), 30 Dowel Pins(10 ea: 1/4" 5/16" 3/8") Wrench & Carpenter Glue.