This Dowel Jig Kit is made of high-quality plastic for accurate and efficient drilling on wood materials. It features parallel fence and drill guide, making it ideal for corner, angle, tee, and butt joints. Its rubber slip protection allows for use on smooth and awkward surfaces. Suitable for 3-12mm drills, this kit is perfect for woodworking DIY, achieving precise drilling limit in multiple directions. Features 1. Premium Material: Made of quality hard plastics are used to establish precise fit connections in glue-laminated wood, solid wood, particleboard, etc. That allows you to produce E, L, or T joints or pin-reinforced miter joints. 2. Precise and Efficient Drilling: Compared to ordinary drilling guides, ours is easier, straighter, and more accurate drilling into wood materials. Can also be used as drilling guide for accurate 90 drilling with drill 3-12mm. 3. Drill Guide Set: Drilling and Dowelling Guide with parallel fence and drill guide. Ideal for corner, angle, tee and butt joints. Rubber slip protection for use on smooth and awkward surfaces. 4. Widely Used: It is used to limit the drill bit in woodworking DIY, control the drilling depth, improve the drilling accuracy, and can realize the drilling limit in multiple directions. Specification Material: Plastic Color: Black Size: 21 x 6.5 cm Weight: 286 g, 489 g Package Include: 1x Drill Guide Set(1Pcs) or 38x Drill Guide Set(38Pcs)