Features: *High-quality steel, heat treatment process. *High hardness,toughness. *Easy to use. *Suitable For Splitting the hard stone,rock,Granite,concrete. *You can have 2 16mm and 2 14mm Splitter Specifications: Material: Metal Color: as picture shown Diameter: approx. 5/8 inch(16 mm)/9/16 inch(14 mm) Length: 105mm (Approx.) *Suitable for Splitting the hard stone, rock, granite, concrete *Quantity: 4pcs How to use: 1.First using quarrying dedicated drill holes, remove residual powder of hole 2.Next upside down the big side of 2 wedges (flat to flat),and put it into hole. 3.Then upside down the small side of central wedge between 2 wedges , and finally using the hammer split stone Package Included: 4*Stone Splitter14mm16mm 2 each Note: 1. 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. 2. Please allow slight manual measurement deviation for the data.