C-K-SDS-Drill-Bit-Set-Of-7-CK-Tools-T3144-Professional-quality-tungsten-carbide-tipped-drill-bits-with-optimized-geometry-for-drilling-concrete-&-stone-SDS-Plus-shank-Supplied-in-a-strong-metal-storage-case-Sizes-5x 110-6x 110-8x 110-6x 150-8x 150-10x 150-&-12x 150mm C-K-SDS-Drill-Bit-Set-of-7