The electric drill must confirm positive rotation and cannot be reversed for drilling. It is recommended to adjust the electric drill to above 1500 rpm. When drilling at low speeds, the speed should be uniformly pressed down. It is prohibited to retract the drill bit several times when it comes into contact with the wooden board before starting the machine, to facilitate the removal of wood chips The drilling effect shows that the edges are and free of burrs Different thicknesses of boards require different screw lengths and specifications. Before tightening the screws, the splicing of two boards must be pre fixed. It is recommended to use pliers//special pulling for diagonal holes, etc. When using screwdriver heads, the electric drill needs to adjust the low speed and high torque gears Choosing a color that is close to the wooden board for installing plastic plugs has a better effect Colour:As Shown Material:aluminum alloy Package Contents: 1 x XK-R1 woodworking oblique hole puncher kit 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.