... in granite, concrete, stone, masonry, tiles and marble. FOUR SQUARES SHANK HAMMER DRILL BITS1. Machined from chrome steel fitted with carbide ... .3. For drilling in granite, concrete, stone, masonry, tiles and marble.4. Sizes: 6.0-30.0mm; Total Length: 120 ... -505mm5. Can be used with * HITACHI VR16, VRV16, VRT22, VRT22A, *MINDONGDiameterFlute LengthOverall LengthSIZE ...