Properly used, these wedges & shims will split most types of stone. The reccomendations shown below are in reference to granite. Other types of stone may require a different hole size, depth, and spacing. Always wear personal safety protection when using these wedges and shims and any power equipment.
 
Hole size     Length     Wedge Number     Shim number
3/8"               2-1/2"        1594                       1597
1/2"               2-5/8"         1566                       734
5/8"               2-3/4"         727                         735