1. Central wedge + 2 wedges composition 2. First using quarrying dedicated drill holes, remove residual powder of hole 3. Next upside down the big side of 2 wedges (flat to flat),and put it into hole 4. Then upside down the small side of central wedge between 2 wedges , and finally using the hammer split stone Specifications: Suitable for Splitting the hard stone,rock,granite,concrete High-quality steel, heat treatment process, High hardness, toughness, low cost, cost, versatility, easy to use Please keep it out of reach of children and safety first Colour:Black Material:metal Size:Diameter: 14x125mm Package Contents: 10* stone clip Only the above package content, other products are not included. Note: Light 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.