Made of steel, which can resist the compression deformation produced during the splitting process and has high hardness and hardness. A combination of many wedges and spacers placed in a series of drilled holes can expand, causing the to separate. Used to separate hard rock, stone, , marble and concrete. Use demo: 1. Prepare the stone splitter and the corresponding percussion bit. 2. Drill holes with a percussion drill, paying attention to the spacing. 3. Insert the stone splitter into the opened hole. 4. Use a hammer to beat evenly back and forth. Name: Stone Splitting Tool Colour:Photo Color Material:steel Size:18mm Package Contents: 10 x wedge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.