Our Wedge and Shim Sets are available to fit hole sizes from 3/8" to 2" diameter. A rule of thumb is 3 sets required per foot of length of stone. For example, a 3 FT long stone would require approximately 9 sets. Drill hole depth to length of wedge. For more accurate splits or for more difficult to split stones, drill holes deeper, closer together and around all exposed sides. 3/8" through 7/8" hole sizes are available in packages of 5 sets (5 wedges & 10 shims). Sets for 1" hole and larger are available individually.