CALIPER MEASURING TOOL: Steel material made calipers with hardened and finely polished points, and durable. CARVING SCULPTURE CALIPER: Wide application, Can be applied for sculpture, pottery, tube and so on. SCULPTURE INSIDE CALIPER: Great for you to measure dimension of an object, such as sculpture, potter, clay, tube, hole and so on. CARVING CALIPER: Inside calipers measure hole diameters and distances between surfaces. OUTSIDE CALIPERS MEASURING TOOL: Outside calipers measure thicknesses and outside diameters of objects. Package List 6 x Calipers Features - Material: Steel. - Size: 20.00X1.50X0.50cm/ 7.86X0.59X0.20in. - Outside calipers measure thicknesses and outside diameters of objects. - Calipers are lightweight and easy to handle calipers transfer measurements from model to clay for both inside and outside dimensions. - Steel material made calipers with hardened and finely polished points, and durable. - Inside calipers measure hole diameters and distances between surfaces. - Color: Silver. - Great for measuring the external and internal size which ordinary calipers can not reach, such as sculpture, pottery, tube. Goods Information The measurement caliper tool set contains outside bent- leg and inside straight- leg caliper. Made of quality steel,, sturdy, high hardness, rust and wear resistance, very durable and have long service time. Excellent workmanship, smooth surface and without any burr.