Stone Wedge For Stone Cracking 14 Mm 5-pack Material: metal Size: Diameter 0.55 inch(14 mm), Length 4.13 inch(105 mm) Suitable for Splitting the hard stonerockgraniteconcrete heat treatment process, High hardness, toughness, low cost, cost, versatility, easy to use Please keep it out of reach of children and safety first How to use 1 Central wedge and 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 Colour: Black Packing List: 5 x tool Only the above package content, other products are not included. Note: Light shooting 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.