Universal Applicability:Diameter is 4 inch and arbor is 5/8 inch so this size can fit all the grinder in the market. High Premium Material:This cavring dics is made by premium carbon steel which has the higher hardness and life. Application:This wheel can be used for wooden materials,grinding,carving and any other DIY wood works. Unique Design: on the thorn design,this grinding wheel is and more efficient than other grinding wheels. Notice: This wood shaping grinder wheel should be used on non-metals or non-metal materials. size:100mm Material:Carbon steel colour:Black Package Contents: 1 x Grinder Wheel Disc Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.