For installing cabinet door panels: Single layer can be hung for 20 mm. Maximum clamping of double layer is 40mm. Simultaneously taking into account the punching of the reboiler. Bidirectional scale, both positive and negative can be used to meet the installation needs of different spaces. The cabinet door can be adjusted up and down by 0-55mm. Can hold 7-40mm, meeting the installation needs of the vast majority of carpenters. Accurately aim at the scale and grasp the height requirements accurately. 8mm all aluminum alloy, sturdy and not easily deformed. Comes with anti slip pads, safe and non slip, does not damage the board. Cabinet door installation assistant/reboiler installation punch Colour:Orange Material:aluminum alloy Package Contents: 1 * Cabinet Door Installation Positioner 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.