VEVOR Doweling Jig Kit, Self Centering Dowel Drill Jig for Straight Holes, with Drill Bit Set 1/4", 5/16", 3/8" and Drill Bit Stop Collar Set, Aluminum Alloy Woodworking Tools for Drilling, Marking Versatile Tool Suitable for Various Wood Types Laser Marked Scales Easy to Use Wide Application High-Strength Build Drill Sleeves: 3 pcs (1/4", 5/16", 3/8"),Body Material: Aluminum Alloy,Dimensions (LxWxH): 5.5 x 2.2 x 1.8 in / 140 x 56.8 x 45.5 mm,Item Model Number: SSXR2502,Product Weight: 0.68 lbs / 0.31 kg,Drill Bits: 3 pcs (1/4", 5/16", 3/8")