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 high hardness and strength, very wear-resistant. Suitable for most hand drills. Self-centering clamps and adjustable fences allow precise alignment of the positioning pins for maximum bonding strength. Allows quick and accurate connection of corners, edges or surface joints with dowels. The metal ring ensures precise alignment during drilling to accurately locate the pins. It can be used on boards up to 1/2 to 1-1/4 inches thick. For the production of precisely assembled connectors, such as plywood, solid wood, and particleboard Parallel plug: T-shaped, adjustable, suitable for all common pin connections with diameters of 6 mm, 8 mm, and 10 mm. Made of impact-resistant ABS plastic, with high hardness and strength, very wear-resistant. Suitable for most hand drills. Self-centering clamps and adjustable fences allow precise alignment of the positioning pins for maximum bonding strength. Allows for quick and precise connection of corners, edges, or surface joints with dowels. The metal bushing ensures precise alignment during drilling to accurately locate pins. It can be used on boards up to 1/2 to 1-1/4 inches thick. For producing precisely assembled connectors, such as plywood, solid wood, and particleboard. Delivered quantity: 41 pieces/set Product color: blue Product size: 20*7.01cm Note: Manual measurement, please allow an error of 1-3 cm.