GARVIN Brand - Carbon Steel Blades
Adjustable Hand Reamers - 6 Blades (BS 3088)
| Symbol | Range | Expansion | l1 | l2 | |
| in | mm | ||||
| H1 | 3/8 to 13/32 | 9.52 to 10.31 | 1/32 | 4.3/4 | 1.1/2 |
| H2 | 13/32 to 7/16 | 10.31 to 11.11 | 1/32 | 5 | 1.1/2 |
| H3 | 7/16 to 15/32 | 11.11 to 11.90 | 1/32 | 5.1/4 | 1.5/8 |
| H4 | 15/32 to 17/32 | 11.90 to 13.49 | 1/16 | 5.1/2 | 1.5/8 |
| H5 | 17/32 to 19/32 | 13.49 to 15.08 | 1/16 | 5.3/4 | 1.13/16 |
| H6 | 19/32 to 21/32 | 15.08 to 16.66 | 1/16 | 6.1/2 | 2.1/16 |
| H7 | 21/32 to 23/32 | 16.66 to 18.25 | 1/16 | 6.3/4 | 2.3/16 |
| H8 | 23/32 to 25/32 | 18.25 to 19.84 | 1/16 | 7 | 2.1/2 |
| H9 | 25/32 to 27/32 | 19.84 to 21.43 | 1/16 | 7.3/4 | 2.5/8 |
| H10 | 27/32 to 15/16 | 21.43 to 23.81 | 3/32 | 8 | 3 |
| H11 | 15/16 to 1.1/16 | 23.81 to 26.98 | 1/8 | 9 | 3.1/4 |
| H12 | 1.1/16 to 1.3/16 | 26.98 to 30.16 | 1/8 | 10 | 3.3/8 |
| H13 | 1.3/16 to 1.11/32 | 30.16 to 34.13 | 5/32 | 11 | 3.7/8 |
| H14 | 1.11/32 to 1.1/2 | 34.13 to 38.10 | 5/32 | 12 | 4.1/4 |
| H15 | 1.1/2 to 1.13/16 | 38.10 to 46.03 | 5/16 | 14 | 4.7/16 |
| H16 | 1.13/16 to 2.7/32 | 46.03 to 56.35 | 13/32 | 16 | 5 |
| H17 | 2.7/32 to 2.3/4 | 56.35 to 69.85 | 17/32 | 18 | 4.7/8 |
| H18 | 2.3/4 to 3.11/32 | 69.85 to 84.93 | 19/32 | 20 | 5.1/4 |
Adjustable Hand Reamers - 4 Blades
| Symbol | Range | Expansion | l1 | l2 | |
| in | mm | ||||
| H-V | 1/4 to 9/32 | 6.35 to 7.14 | กก | 3.1/4 | 1.11/32 |
| H-W | 9/32 to 5/16 | 7.14 to 7.94 | กก | 3.1/2 | 1.11/32 |
| H-Z | 5/16 to 11/32 | 7.94 to 8.73 | กก | 4.1/8 | 1.1/2 |
| H-Y | 11/32 to 3/8 | 8.73 to 9.52 | กก | 4.3/8 | 1.1/2 |
