[HIGH QUALITY MATERIALS]: Made of impact resistant ABS plastic, with high hardness and strength, very wear resistant. Suitable for most hand drills and electric drills [EASY TO USE]: Self-centering clamps and adjustable fences achieve precise alignment of positioning pins for maximum bond strength [PRECISE POSITIONING]: Allows quick and precise connection of corners, edges or surface joints with dowels. Metal sleeve ensures precise alignment of pins when drilling [ADJUSTABLE POSITION]: The position of the baffle can be adjusted as needed. The adjustment range is 0 to 50 mm, suitable for 6/8/10 mm drills [SUITABLE THICKNESS]: It can be used on boards no more than 1/2 to 1-1 / 4 inches thick. Used in the production of precision assembled connectors, such as plywood, solid wood and chipboard 41Pcs Dowel Drilling Jigs, Woodworking 6/8 / 10mm Drill Guide Kit, Straight Hole Woodworking Dowel Jig, Portable Drilling Tool, Handheld Wood Dowel Jigs Specification: Material: plastic + metal Size: