ShanMeng R&D department successfully developed TSG series chisel of special materials. The service life of the TSG46A chisel is 50% longer than that of 42CrMo chisel, and the stability is more than 2 times. The service life of the TSG48A chisel is 100% longer than that of 42CrMo chisel, and the stability is over 4 times. Self-developed material, using vacuum quenching, super wear-resistant, super durable.