A reamer is a type of finishing tool. When we drill holes in lumps of metal, we typically use a fairly standard drill bit in either our mini-lathe or micro-mill. Drill bits do a pretty good job. If you only need a hole to pass a bolt through, or to tap with a thread, then a standard drill bit will create a suitable hole. A reamer will take a rough hole cut by a drill bit and turn it into a truely round hole of a known inner diameter.
| SF4RM030 | 3 | 6 | 15 | 60 |
| SF4RM040 | 4 | 6 | 18 | 60 |
| SF4RM050 | 5 | 6 | 20 | 60 |
| SF6RM060 | 6 | 6 | 25 | 75 |
| SF6RM080 | 8 | 8 | 30 | 76 |
| SF6RM100 | 10 | 10 | 35 | 100 |
| SF6RM120 | 12 | 12 | 40 | 100 |
