Description This caliper set is well made of premium material with hardened and finely polished points for durable and practical use. It can be used for measuring and transferring precise distances between two points and drawing arcs, and measuring ID/OD for hole diameters and groove and tube thicknesses. Besides, it features a solid nut for precise fine adjustments that will securely hold any measurement. Feature - Color: Silver. - Material: Carbon steel. - Size: Approx. 23 x 2 x 1 cm / 9.1 x 0.8 x 0.4 inch (L x W x H). - Carbon steel with hardened fulcrum spring and points for long life. - Can be used for measuring and transferring precise distances between two points and drawing arcs, and measuring ID/OD for hole diameters and groove and tube thicknesses. - Features quick-spring nut for rapid and precise fine adjustment. - Used for measuring and transferring precise measurements. - Adjustment mechanism is central located to assure smooth action.Package list: 1 x set of 3 Pcs 8 Inch Caliper Set Rapid Adjust Quick Spring Divider Inside ID Outside OD Calipers Fine Adjustment Measuring Calipers