From the world manufacturer STAHLBERG with many years of experience using the latest technologies. The bit is made of precision forging (increases strength by up to 20% compared to machined) from chromium vanadium steel S2 (excels in toughness), hardened to 61-62 HRC. On the work surfaces, diamond grains are the most effective protection against slipping out of engagement. The gold, titanium nitride (TiN) layer protects the bit against abrasion. Packed in a practical resealable case of 10 pcs.