【Quality】 6061 aluminum alloy, forged from high-quality tool steel, anodized surface treatment, good wear resistance, good strength and long service life. 【Range】Drill bit thickness: 10-180mm; side hole diameter: 15mm; straight hole diameter: 6/8 / 10mm; sliding stroke: 5-90mm; side hole stroke: 23-43mm. 【Design】Self-centering drill guide and adjustable right angle tool allow for precise doweling and maximum joint strength. When drilling, steel bushings ensure precise alignment for perfectly positioned dowels. 【Application】 Can be used for edge, surface, T-shaped, and L-shaped joints. Ideal for home repair or DIY, handyman, wood working fanciers. 【Function】Adjustable drill guide can easily meet your drilling requirements. The pressing plate can tightly fix the wood board. Suitable for making edge-to-edge, edge-to-surface and edge-to-corner joints.