Adjustable hand reamer as a set of 7 - ideal for precise enlarging and holes. The size of each reamer can be easily adjusted by tightening and loosening the restraint nuts at each end of the grater. The graters can be operated by hand or with a wrench. The adjustable hand reamer set is presented in a wooden case and contains 7 graters in the following sizes: 8/A - 1/4" to 9/32". 7/A - 9/32" to 5/16". 6/A - 5/16" to 11/32" 5/A - 11/32" to 3/8" 4/A - 3/8" to 13/32". 3/A - 13/32" to 7/16". 2/A - 7/16" to 15/32", Manufacturer: Alok