The RODAC carbide chisel set has 8 pièces with 1/4'' shank offering different sizes for your convenience: SA: 3/8" X 3/4" & 1/2" X 1", SC: 3/8" X 3/4" & 1/4" X 5/8", SD: 1/4" X 1/4", 1/4" X 3/8", SG: 3/8" x 3/4" and 1/2" x 1". SD: 1/4" X 1/4", 1/4" X 3/8", SG: 3/8" x 3/4" & 1/2" x 1".