CAT40 1/4" End Mill Holder
| Part Name | d | D | L | L1 | T |
| CAT40 EM1/4-2.56" | 1/4 | 0.79 | 2.56" | 1.18 | 1/4"-28 |
| CAT40 EM1/4-4" | 1/4" | 0.79" | 4.00" | 1.18" | 1/4"-28 |
| CAT40 EM1/4-6" | 1/4" | 0.79" | 6.00" | 1.18" | 1/4"-28 |
| CAT40 EM1/4-8" | 1/4" | 0.79" | 8.00" | 1.18" | 1/4"-28 |
| Part Name | d | D | L | L1 | T |
| CAT40 EM1/4-2.56" | 1/4 | 0.79 | 2.56" | 1.18 | 1/4"-28 |
| CAT40 EM1/4-4" | 1/4" | 0.79" | 4.00" | 1.18" | 1/4"-28 |
| CAT40 EM1/4-6" | 1/4" | 0.79" | 6.00" | 1.18" | 1/4"-28 |
| CAT40 EM1/4-8" | 1/4" | 0.79" | 8.00" | 1.18" | 1/4"-28 |