Bonmach is one of the leader manufacturer of tapered button bit manufacturer in China. Our taper button bit includes mining taper rock drill bit series and tunneling tapered button drill bit series to meet different requirements. Also, we could customized the knock drill button bit upon request. We select finish forged Steel NO. 42CrMo with Hardness: 42HRC as the body, Carbide button material NO.: GF20G，GF20B with Hardness 90.3HRA-90.4HRA, use cold molding technics for all of our small tapered rock drill button bits. Bonmach’s tapered button bits have the feature high drilling efficiency, long service lift, better powder-discharge, better wear-resistance and impact-resistance, easier bit-back performance etc.