Rika HTSR055 Diamond Core Drill Set – 11 Piece with Case – RIKAHTSR055. For fast, clean cutting and drilling in masonry, bricks or blocks, look no further than this Rika diamond core drill set. Supplied with accessories and a handy carry case, you’ll be ready for a range of jobs. The kit includes 38mm, 52mm, 65mm, 117mm and 127mm diamond core drill bits suitable for wet and dry cutting. Use – Wet and Dry Barrel – Steel Slotted Barrel to Aid Removal of Debris Compatibility – For Use with 3-Jaw Chuck Machines on Rotary Action or SDS Plus Core Sizes – 38mm, 52mm, 65mm, 117mm, 127mm Segments – Diamond Segments Quality – Professional Quality Diamond Core. 5 Popular Core Sizes – 38 x 150mm, 52 x 150mm, 65 x 150mm, 117 x 150mm, 127 x 150mm Hex Adaptor – 1/2″ BSP x 90mm SDS Plus Adaptor – 1/2″ BSP x 115mm Hex Adaptor – 1/2″ BSP x 240mm SDS Plus Adaptor – 1/2″ BSP x 240mm Tapered Centre Drill Bit – 10 x 200mm Tapered Guide Rod – 10 x 200mm Drift Key – 8 x 70mm Case – Aluminium Carry Case.