ANOTHER GREAT DEAL FROM POWER TOOLS UK. Abracs ABDCORESET5 Dry Diamond Core Drill Set 5piece. Abracs ABDCORESET5 diamond core bit set manufactured from tool grade steel and top quality premium diamond grain. The 5 diamond core bits in this ABDCORESET5 kit are 150mm long with a 10mm diamond segment set into the core giving the trade superb working life. This ABRACS core kit contains the 5 most popular sizes plus a full range of accessories plus a sturdy and secure aluminium case. 5piece Dry diamond core kit. Core sizes 42mm, 52mm, 65mm, 117mm and 127mm. 115mm general construction diamond disc. Images for illustrative purposes only – please refer to description and specification for full details of product.