Features 1、Easy to use, hand‑held design, easy to hold and use, you just need one clamp to test metal. 2、Durable and made of high‑quality iron material, it is not easy to be damaged and has a long service life. 3、The measurement is accurate, convenient to carry out and use for measurement, and the efficiency is high. 4、The reading is intuitive and clear, independent dial, built‑in shrapnel type force transmission, very convenient. 5、Mechanical regular design, compression spring detection device, tightly connected and assembled. Specification Item Type: Hardness Tester Material: Iron Model: W-BB75 Application: Metal hardness measurement Range: 0~20HW Accuracy: 0.5HW Applicable Materials: Soft brass, red copper Hardness Range: 10~100HR Sample Size: Thickness 0.6-6mm/0.02-0.24 Inner diameter> 10mm/0.39in Package List 1 x Hardness Tester 1 x Hardness Block 1 x Spare Indenter 1 x Wrench 1 x Screwdriver 1 x Manual 1 x Toolbox