Feature:1. 8 Drill Bushings: The kit contains 8 specifications of metal drill bushings from 3mm to 10mm, with high hardness and are not easy to wear.2. Fast Positioning: The center position can be quickly located, accurate and efficient, the maximum thickness of board supports 45mm.3. Aluminum Alloy Made: The drill guide is made of aluminum alloy with anodized surface, which is not easy to rust, ensures stability and durability.4. Easy Operation: With 6mm and 8mm card slots, and parallel line check slots, you can complete alignment and drilling easily.5. Furniture Installation: Widely used for precise positioning of furniture boards when punching, with good perpendicularity, so that the boards can be spliced better.Specification:Item Type: Self Center Dowel JigMaterial: Aluminum AlloyColor: RedDrill Bushing: Approx. 3mm/0.12in, 4mm/0.16in, 5mm/0.2in, 6mm/0.24in, 7mm/0.28in, 8mm/0.31in, 9mm/0.35in, 10mm/0.39in, meeting various hole opening sizesPurpose: Woodworking tools.Package List:1 x Self Center Dowel Jig8 x Drill Bushings