Quick, easy installation of cables, wire and copper pipe, giving a clean finish. Ergonomic design for ease of use. For use on most masonry, including concrete, brickwork and mortar. Specifications: 30mm channelling chisel for installing cables and wires. 55mm channelling chisel for installing casing and conduit. Both suitable for use on most masonry, including concrete, brickwork and mortar. 20mm extended version for gaining access behind skirting board. Use SDS Plus machine with roto stop.