Cop44 series DTH button bits,diameter 4.5"~6" using 23CrNi3Mo steel and YK05 carbide Product Description Cop series is a kind of high air pressure DTH button bit without footvale. It is also one of the most ... Read MoreGet Best Price
4 buttons button bit using for pusher leg drill machine PRODUCT INTRODUCTION Tapered Button Bits is suitable for mining,quarring,tunneling and so on. It is widely used for gound quarring and underground ... Read MoreGet Best Price