1、Main Application: Straight hole puncher locator is a set of drill guide tools for holding and centering during drilling and woodworking, also a locator for splicing and opening planks. 2、Best Aid: Centerlines of the locator ensure precise alignment when drilling on various appearances. Holding the main body of the drill guide, you can easily drill a vertical hole without any deviation. 3、Aluminum Alloy: Made of excellent aluminum alloy, this locator is strong, corrosion resistance, comes with a long life span. 4、Adjustable: This positioner can be adapted to boards according to different board thicknesses, convenient for your operation. 5、2 to 10mm Drill Sleeve: This set is equipped with 2 to 10mm drill sleeve to meet your drilling needs of different sizes.