Handle punching positioning ruler, flexible adjustment, lateral pointer for precise positioning Rotation screws can be adjusted at will, and the distance can be adjusted Widen and enlarge the positioning block, fix it for one second and punch it easily. Black screws are balanced and fixed, and the screws are loosened to adjust the balance. hole position can show scale, and the middle left and right holes can clearly see scale. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! product name:Handle positioning ruler Function: Handle hole guide Inner groove width: 24mm Outer groove width: 12mm Colour:Red Material:Aluminum Alloy Package Contents: 1x Handle positioning ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.