... Size: 30, 32, 34, 38, 40, 43, 50mm Connect: hex19, hx22, hex25 taper rod Tips: spherical, ... button bit(28mm, 30mm, 32mm, 33mm, 34mm, 36mm, 38mm, 40mm, 42mm, 44mm and so on. With different degree taper) ... , 102mm, 115mm, 127mm and so on. R25--38mm, R25--41mm, R28--38mm, R28--41mmR32; R32--45mm, R32--76mm, R32 ... 'aImgSrc': aBigImageSrc } ); } )(); Button bits for Rock drilling 34mm/ 38mm/ 40mm/ 43mm etc