: Woodworking Model Number: Stone Splitter Type: Stone Wedges Application: Wedge Feathers Stone Model: Industrial Grade 14 Material: Metal Color: Black Diameter: .14mm ( 9/16inch ), (use 1/2inch hammer bits can be) Size: .14 x 125mm/0.6 x 4.9 inch Quantity: 21 Set (1pc wedge + 1pc ring + 2pcs = 1 set) Suitable for: split the hard stone, rock, , concrete. High-quality steel, heat treatment process. High hardness and high toughness. and practical. Easy to use. How to use: First with quarrying dedicated drill holes, remove residual powder hole. two big -wedge, the plane would like to put in the hole. Then put upside down in a small wedge in the middle wedge, and finally with the hammer. Package Content: 21 Set x Wedge and Stone Splitter Only the above package content, other products are not included. Note: Light reflection 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.