Parallel plug: T-shaped, adjustable, suitable for all common pin connections with diameters of 6 mm, 8 mm and 10 m Made of impact-resistant ABS plastic, with a high hardness and strength, very wear resistant. Fits most hand drills. Self-centering clamps and adjustable fences allow precise alignment of locating pins for maximum bond strength. Allows for quick connection and precise corners, edges or surface joints with dowels. The metal ring provides precise alignment while drilling to accurately locate pins. It can be used on boards up to 1/2 to 1-1/4 inch thick. For the production of precision joined connectors, such as plywood, solid wood and particle board Fast clamp, self-centering on the board, to quickly and precisely locate the seam. Able to connect side to side, T and side to side. Made of impact resistant plastic. It can be used on boards up to 1/2 to 1-1/4 inch thick. Suitable for dowel drill bits. Suitable for 6 8mm and 10mm drill bits. Specification: Material: Plastic Metal Size: 7.87x2.76 inch Blue Color Package includes: 1 x Woodworking Positioning Device 3 x Limit Ring 1 x Wrench 3 x drill 30 x positioning pins 3 x positioning drill 1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before you bid. 2. Due to the differences between different monitors, the picture may not reflect the actual color of the item.