• Central wedge + 2 wedges composition.• First using quarrying dedicated drill holes, remove residual powder of hole.• Next upside down the big side of 2 wedges (flat to flat),and put it into hole.• Then upside down the small side of central wedge between 2 wedges , and finally using the hammer split stone.Suitable For: Split the hard stone,rock,concreteColour: blackMaterial: metalSize: diameter 16mm, length 125mmPackage Contents:6 x Stone separatorNote:Before use, please make the necessary protective measuresWhen the stone is about to split, keep alert.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.