1、[Reliable Construction] Crafted from premium material, this triangle square ensures a sturdy structure that guarantees longevity and reliability in various work conditions. 2、[Adjustable Sliders] Equipped with 2 sliders, offering flexible positioning, can be easily adjusted based on the depth of the cabinet side panel, facilitating accurate drilling and screw insertion. 3、[Accurate Hole Positioning] With a positioning aperture of 4.5mm, it is recommended to use a 3 to 4mm drill bit for accurate hole placement, making drilling tasks more efficient and accurate. 4、[Seamless Solid Base] The seamless solid base design ensures a seam free and consistent alignment between the base and the ruler. Its smoothly and delicate surface enhances user comfort and durability. 5、[Versatile Functionality] The positioning triangle ruler is a multifunctional tool suitable for accurate measurements, drilling positioning, and marking tasks, making it a versatile and essential tool for carpentry work. Item Type: Rafter Square Material: Plastic Hole Diameter: Approx. 4.5mm/0.18in, Suggest using 3-4mm drill bit for drilling and positioning Size: Approx. 300x420mm/11.81x16.54in 1 x Rafter Square 2 x Sliders