Multifunctional Hole Locator: One-Click Positioning, Reducing The Time To Draw The Line And Find The Position. Multi-Hole Measurement, Precise Measurement, Wide Application. Flexibility & Adjustable: Fixed Screw Cap With Flexibility, 360 Degree Free Adjustment To Avoid Errors And Improve Work Efficiency. 3 Aperture Sizes: 25Mm, 40Mm, 45Mm, 55Mm Semicircle, The Size Is Versatile, You Can Determine The Position Of The 84 Line Area, Just One Click. Steel Stainless: Made Of Stainless Steel, High Hardness And Wear Resistant, Not Easy To Rust And Has A Long Service Life. Lightweight, Easy To Carry And Use. Widely Used: Used For Precise Positioning Of Marble Wood And Plastic Drilling. Designed To Offer Great Precision And Optimum Comfort When Laying Tiles.