Description:This drill guide set is a practical woodworking tool for dowel holes drilling. Easy to operate, it can be adjustable to clamp on different thickness of wood boards from 17mm to 50mm. This kit includes 6/8/10mm bushings and positioning pins, making it easy to drill holes with equal spacing.Features:Made of high quality aluminum alloy 6061 and anodic oxidation treatment for durability.High hardness and strength, very wear-resistant.The drill guide is adjustable to clamp on different thickness of wood boards from 17mm to 50mm.Comes with 6mm, 8mm and 10mm bushings for making different sizes of holes.With 6/8/10mm positioning pins, easy to drill a row of holes with equal spacing.Specifications:Condition: 100% Brand NewColor: RedMaterial: Aluminum Alloy 6061 + Steel(drill bushing) + Brass (Nut)Surface Treatment: Anodic oxidationMaterial of Drill Bushing: Steel HRC50Positioning Pin: 6/8/10mmClamping Wood Range: 17-50mmSize: approx. 23.5 x 10 x 3.5cm / 9.25 x 3.94 x 1.38inWeight: approx. 977gPackage Included:1 x Self Centering Dowelling Jig9 x Drill Bushings (3pcs 6mm, 3pcs 8mm, 3pcs 10mm)3 x Positioning Pins (6/8/10mm)