HELLER Choose Options PREFIX MSRP: £3.12 - £49.92 Was: Now: £2.59 - £41.53 (Inc. VAT) MSRP: £2.60 - £41.60 Was: Now: £2.16 - £34.61 (Ex. VAT) The Prefix, with the SDS-plus shank, is a reliable entry-level hammer drill bit that Heller has adde…