1、Opening Size: The standard opening size is 25mm, 40mm, 45mm, semi circular 55mm holes, multi sizes design, strong versatility, to meet most needs. 2、Accurate Positioning: With precision measuring ruler and locator, it can help you position with one click when installing tile, reduce the time of drawing line and finding position. 3、Flexible Rotating Nut: The fixed nut on the positioner is flexible and can be adjusted 360 degrees freely to prevent mistakes and improve work efficiency. 4、Portable and Durable: The tile hole positioner is made of premium stainless steel, durable and resistant to rust, lightweight, very portable and easy to fit into tool bag. 5、Widely Used: This hole locator tool is suitable for the precise positioning of ceramic, marble, wood, plastic drilling, suitable for woodworking, construction, DIY and other scenarios.