Features: *Make it easier to split rocks, granite, marbles,concrete,etc. *High-quality steel, heat treatment process, high hardness and toughness. *Shims are made of high-hardness steel, heat-treated process to enhance toughness. *Using this tools to split the stone by hand, suitable for splitting hard stone, rock, granite, marble, concrete, basalt, sandstone, gneiss, limestone, shale, conglomerate. *The product will rust, which will not affect the use. Please make sure you don't mind before purchasing. How To Use: *Drill holes with quarrying dedicated drill, remove residual powder of hole; *Put stone splitter into the holes; *Hit the rock splitter with a hammer until the stone cracks. Specifications: Product name:Rock Stone Splitters Material: Corrugated Steel Bar Color: As shown Total Length: (Approx. ) 160mm Drilling diameter: (Approx. ) 30mm Suitable for: splitting hard stone, rock, granite, marble, concrete, basalt, sandstone, gneiss, limestone, shale, conglomerate. Quantity: 1Set Package Includes: 1Set Rock Stone Splitters Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.