stone cutter ISO standard brazed tips,tips as per national trade standardA,B,C,D,E,G,K,A315,A320 stone cutterISO standard brazed ... -7000type seriesA1 type for making external turning tools,boring tools and grooving toolsA2 type for boring cutter and facing toolA3 type for facing ... grooving toolC4 type for making V-belt wheel grooving tool stone cutter