100% and high quality Features: Adjustable to find the center point for punching. The main body is made of all aluminum alloy with strong corrosion resistance. The bearing steel drill sleeve is threaded for precise positioning. Suitable for clamping 18-60mm wood boards. Instructions: 1. Determine the distance between the first hole and the end of the board 2. Fix the position and start to punch 3. Complete the first three holes and loosen the nut next to the limit pin 4. Fix on the third hole with a positioning pin, make sure that each hole is evenly spaced, and continue to punch the hole later 5. Complete all the holes and plug the round dowels (wood tips) to play a role in positioning Woodworking Tools Set only,other accessories demo in the picture is not included Specification: Item: Straight Hole Doweling Jig Kit Applicable:18-60mm wood board Drill Bushing Size:6/8/10mm Material: Metal Size: app.24x10cm/9.45x3.94in Color: Black Optional Package Set: 1, 2, 3 Quantity: 1 Set Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Contents: 1 x Woodworking Tools Set