Features Versatile 6 Size Drill Bushings: This set includes 6 inner diameter drill bushings to accommodate various drill bits, ensuring you have the right fit for every project Effortless and Accurate Usage: The kit comes with a centering drill guide and punch, making it simple to achieve precise punching and drilling every time Innovative Centering Drill Guide: Designed with a V slot and recessed circular hole, this guide provides exceptional stability on any board edge or surface for optimal control Durable Alloy Steel Construction: Crafted from high-strength alloy steel, the drill bushings offer longevity and reliability, while remaining compact for easy transport Perfect for Multiple Applications: Ideal for accurately locating and drilling straight holes on flat, round, and edged surfaces, this kit is essential for woodworking and DIY enthusiasts Features: 1、6 Size Inner Diameters Drill Bushing: This set contains 6 size inner diameters drill bushing to meet the needs of different drill bits 2、Easy Usage: The kit is equipped with a centering drill guide and a centering punch for convenient and accurate punching 3、 Centering Drill Guide: The centering drill guide features V slot and reced circular hole that fit flush with any board edge, flat and round side, wooden circle, etc. for best control and 4、Sturdy and : The drill bushing is made of alloy steel, has high strength, with compact and portable size, which is easy to carry 5、Application: This self centering dowel jig kit is used to accurately locate and drill ly straight holes on flat, round, edged sheets Specification: Item Type: Self Centering Dowel Jig Kit Material: Alloy Steel Drill Sleeve Inner Diameter: Approx.4mm/0.16in, 5mm/0.2in, 6mm/0.24in, 8mm/0.31in, 10mm/0.4in, 12mm/0.47in Package List: 1 x Centering Drill Guide 1 x Centering Punch 6 x Drill Bushing Note: Pay attention to safety protection when using. Package List 1 x Centering Drill Guide 1 x Centering Punch 6 x Drill Bushing