â € ” Y20 Hand-held Rock Drill Model Y20 Hand-held Rock Drill is intended for drilling downward and inclined blast holes in medium hard and herd rock ( f= 8~ 18) : â € ¢ The rock drill is mainly used....
Based in China, Maxdrill Rock Tools Co Ltd is an ISO 9001: 2008 certified manufacturer of high quality, competitively-priced rock drilling tools, as well as self drilling rock bolts and accessories.....
â € ” MAXDRILL Thread Button Bit Thread button bits made with high quality of best quality alloy steel bar and tungsten carbides, through heat treatment so that it can withstand the toughest rock....