Material: metalSize: Diameter 9/16 inch(14 mm), Length 4-2/5 inch(110 mm)Suitable for Splitting the hard stonerockgraniteconcreteheat treatment process, High hardness, toughness, low cost, cost, versatility, easy to usePlease keep it out of reach of children and safety firstHow to use1 Central wedge + 2 wedges composition2. First using quarrying dedicated drill holes, remove residual powder of hole3. upside down the big side of 2 wedges (flat to flat),and put it into hole4. Then upside down the small side of central wedge between 2 wedges , and finally using the hammer split stoneColour: BlackPacking List:5 * 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.