QWORK® Industrial Grade 9/16" Plug Wedge and Feather Shims Concrete Marble Granite Rock Stone Splitter Hand Tools (2)

Items arrived on schedule, well packaged and exactly as described by seller. Would recommend.

Bought these to split a large concrete set of steps I had. You do need a 14mm SDS Hammer Drill, not a puny domestic hammer drill. Cleal out the hole with a hoover or similar, then slide out the central wedge and insert the feathers fully into the hole, making sure you line up the wedge with the line of where you want to crack the slab. You need about one evert 3-4 inches I reckon so I ordered 4 (2 packs). They are not as big as the pictures make them look(!) Then tap each one in turn like tightening wheel nuts and gradually apply a harder bang with your lump hammer. After a few sets of blows you can hear it start to very quietly creak then a crack appears and the wedges start to move more easily. Nothing broke or bent and although the drill bit started to wear out a bit after a dozen breaks, the wedges work well. You do need to insert them all the way and also allow about 4-6 inches of concrete between them and the edge otherwise the concrete might break at 45 degrees instead of 90. But if you have a bit of a practice you can get very nice clean breaks in concrete several inches thick.

I have yet to use it

simple to use and well made should get years out of these.

Made light work of some very big rocks / Boulders

Used the break a large sandstone boulder in the garden. Worked well.

Used this product twice. This product has saved my back multiple times when having to break up concrete post footings and foundations. Next time tough I would probably buy a longer one for deep footings.

Totalmente recomendables, he podido partir en un rato una peña que tenía en el patio bastante grande y casi sin esfuerzo. Haces el agujero en la piedra con el taladro, colocas las cuñas y en unos pocos macetazos se parte. He pegado bien fuerte a las cuñas con un marro y siguen nuevas.

Bra

Ottimi per piccoli lavori con la pietra

Funcionan bien. Rompen con facilidad.