If you need to drill holes in masonry from 38mm to 117mm, this Mexco core drill bit set will come in really handy. The kit contains three diamond core drills along with a 200mm hex, SDS arbor and A-taper pilot dry core drills have a high diamond concentration for greater strength and a longer life, while the slotted barrel improves waste removal. You’ll get 38mm, 52mm and 117mm sizes, plus a sturdy case to carry them in. 38mm, 52mm & 117mm diamond core drills, 200mm hex and SDS arbor (1), A-taper pilot drill (1). Set or Single Item. We contact you during dispatch for larger items. We arrange the courier collection for you. We go above and beyond to ensure you receive the best level of service, we aim to answer all questions within 24 hours.