Hex Flat Chisel (17x280x25)

Where a point concentrates the machine's entire blow into one spot to fracture concrete outwards, a flat spreads it along a straight edge. That is exactly wrong for shattering a slab and exactly right for everything that involves a line or a surface: chasing a channel across a wall for conduit or pipe, cutting a straight edge in concrete or masonry, stripping tile beds, screed and render off a slab, cleaning up after a point chisel has broken the bulk out, cutting brick and block, and shearing off protruding fixings and rebar stubs.

The 25mm width is a deliberate compromise worth understanding. A wider blade covers more per pass but spreads the machine's energy thinner, so it goes slower into hard material and can stall in dense concrete. A narrower one cuts harder but takes more passes. Twenty-five millimetres sits where most breaking and chasing work is comfortable, cutting a useful width without asking more of the machine than it has.

The material is chrome alloy steel, heat treated and tempered to above HRC 50, with a matt finish. That is a higher hardness than a hammer face and correctly so: this is a struck cutting tool that must hold an edge against concrete and stone rather than a striking face that must deform rather than chip.

Technique matters as much here as on the point. Work at a shallow angle rather than straight in, so the chisel undercuts and lifts material off rather than burying itself. Work from a free edge and travel along the line, letting each blow break into the space the last one made. And let the machine's weight do the work — pushing hard on a breaker restricts the chisel's recoil and reduces the blow rather than increasing it, which is the most common reason people conclude their machine is underpowered.

The buyers are demolition and breaking contractors, electricians and plumbers chasing walls and slabs, tiling and flooring contractors stripping old beds, civil and groundworks crews, renovation builders, and hardware dealers supplying contractors.

Practical care. Never use it as a lever to prise material free — struck tools bend, and a bent chisel damages the tool holder as well as itself. Keep the shank clean and lightly greased so it moves properly in the holder. Dress the cutting edge when it dulls, since a blunt flat chisel bounces rather than cutting. And check your breaker takes a 17mm hex shank before you order; send us the model on WhatsApp and we will confirm it.