Dowel pin drill guide sleeve: drilling and dowel pin guide sleeve with parallel baffle and drill guide. Very suitable for corner joints, corner joints, tee joints, and butt joints. Rubber anti slip protection, suitable for smooth and uneven surfaces. Suitable for use with standard tenon sizes: Å 6, 8, and 10 mm. Accurate and efficient drilling: Compared to ordinary drilling guides, our drilling guides are easier, straighter, and more accurate in drilling into wood materials. It can also be used as a drilling guide for precise 90 ° drilling using a drill bit. High quality material: It is made of high quality hard plastic, and is used to establish precise matching connection in laminated wood, solid wood, particle board, etc. This enables you to produce E, L, or T-joints or pin reinforced miter joints. Widely used: Used in woodworking DIY to limit drill bits, control drilling depth, improve drilling accuracy, and achieve multi-directional drilling limitation. Color: Black Material: metal Package Contents: 1 x (38pcs Set) dowel drill guide Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.