Dowel pin drill guide sleeve: drilling and dowel pin guide sleeve with parallel baffle and drill guide. Suitable for corner joints, tee joints, and butt joints. Rubber anti-slip protection provides stability on smooth and uneven surfaces. Compatible with standard tenon sizes: 6 mm, 8 mm, and 10 mm. Accurate and efficient drilling: Compared to standard drilling guides, this guide allows for easier, straighter, and more precise drilling into wood materials. Can be used as a drilling guide for accurate 90° drilling with a drill bit. High-quality material: Made from durable hard plastic, designed for creating precise, strong connections in laminated wood, solid wood, particle board, and other wood-based materials. Ideal for forming E, L, T-joints, or pin-reinforced miter joints. Widely used in woodworking and DIY projects to guide drill bits, control drilling depth, improve accuracy, and enable multi-directional drilling alignment. Color: Black Material: Plastic Package Contents: 1 x dowel drill guide set (38 pieces) Note: The package includes only the items listed above. Other accessories shown in images are not included. Due to lighting and display differences, actual product color may vary slightly from the image. Measurement may vary by +/- 1-3 cm.