1It is made of 6150 industrial grade aluminum alloy with good strength and high corrosion resistance, durable and long service life 2Large clamping range, the maximum is 60mm 3The drill bushings adopt 60CR bearing steel material, high strength and accurate positioning 4Comes with 9 drill bushings in 3 sizes, meet different needs in the wood drilling hole process 5Large clamping range, the maximum is 60mm Descriptions: This doweling jig is made of 6150 industrial grade aluminum alloy with good strength and high corrosion resistance, durable and long service life. Large clamping range, the maximum is 60mm. Comes with 9 drill bushings in 3 sizes, meet different needs in the wood drilling hole process. Features: It is made of 6150 industrial grade aluminum alloy with good strength and high corrosion resistance, durable and long service life. Large clamping range, the maximum is 60mm. The drill bushings adopt 60CR bearing steel material, high strength and accurate positioning. Comes with 9 drill bushings in 3 sizes, meet different needs in the wood drilling hole process. Large clamping range, the maximum is 60mm. Equipped With positioning scale, determining the distance between the first hole and the clamp. Specifications: Material: aluminum alloy Color: blue Drill bushings size: 6/8/10mm(3pcs/each type) Positioning dowel: 6/8 /10mm Suitable wood size: 17-60mm/0.67-2.36inch Size: Approx. 23.5 x 10 x 3.8cm/9.25 x 3.94 x 1.50inch Weight:780g How To Use: 1. Adjust the positioning scale to determine the distance between the first hole and the board end. 2. After fixing the position, select the drill bit that matches with the drill bushings to start drilling. 3. Remove the nuts on the scale after holing three holes 4. Use the positioning pin to fix the hole on the third hole (make sure the distance of each hole is the same). 5. Drill all straight holes 6. Stick the round wood pin with glue firmly to the punched hole Package Included: 1 x Self Centering Doweling Jig 9 x drill bushings 3 x Positioning dowel Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.