Online Shop Scroll our online shop below for our large range of great quality fixings and fasteners. 4.0mm Store/Drilling & Cutting For Masonry/SDS Plus Drill Bits/Heller 2018 Bionic Pro SDS Drill Bits/4.0mmRefine by FiltersClear allFiltersClear allShow itemsShow items4.0mm x 110mm (50mm cutting) SDS Plus Bionic Pro Drill Bit (Part 163064) Pack of 14.0mm x 110mm (50mm cutting) SDS Plus Bionic Pro Drill Bit (Part 163064) Pack of 1£3.48