H1 - H10 (4/A - G) (3/8" - 15/16") (9.52mm - 23.81mm) BEST Adjustable Hand Reamer Set made by Carbon Steel. They can ream almost any odd size hole. Each hand reamer is packed in a separate hard plastic container, to provide a secure package for future use also. Can be customized as per buyer's requirement. Check our store for other combinations ACTOOLS Expanding HV-H16 (8/A-M) Adjustable Hand Reamer Set (1/4"-2 7/32") (6.35-56.35mm)