Features 【High-quality stainless steel】Crafted from high-quality stainless steel, this radius gauge is built to last and highly resistant to rust. 【Dual-purpose design】With two types of leaves, this gauge can effortlessly measure both convex and concave surfaces. 【Intuitive identification】Every leaf is clearly labeled for easy recognition, so you can quickly locate the specific leaf you require. 【Versatile selection】We offer four different shapes and sizes to cater to diverse measurement needs. 【Essential tool】From tool and die makers to machinists and beyond, this gauge is an essential tool for anyone needing to check the radius of their tools. Features: Made of stainless steel, this radius gauge is durable and resistant to rust. This radius gauge has two types of leaves so it can check both convex and concave surfaces. Each leaf is clearly marked, convenient to identify which leaf you need. There are four radium gauges in different shapes and sizes to meet you various need. Very useful gauge for tool & die makers, machinists, and many other worker to check the radius of tools. Specification: Material: Stainless steel Measuring Range: R0.3-1.5/ R1-6.5/ R7-14.5/ R15-25 Weight: 270g / 9.5oz(approx.) Package list: 4 * Radius Gauges Package List