2 Step Rev
Medium Duty 2 Step Rev
| PART NUMBER | SHORT DESCRIPTION | Chuck Size | A | B | C | D | E | F | J | K | L | BOLT |
| HR-6 MTGRJ | ASTG 6" MD 2 STEP REV HJ | 6" | 2.788 | 1.969 | 1 1/2 | 0.313 | 0.500 | 1.500 | 1.125 | 0.530 | 1.060 | 3/8 |
| HR-8 MTGRJ | ASTG 8" MD 2 STEP REV HJ | 8" | 3.286 | 1.969 | 1 1/2 | 0.313 | 0.500 | 1.750 | 1.375 | 0.530 | 1.060 | 3/8 |
| HR-8 STGRJ | ASTG 8" MD 2 STEP REV HJ | 3.270 | 1.625 | 1 | 0.313 | 0.500 | 1.750 | 1.375 | 0.375 | 0.750 | 3/8 | |
| HR-10 MTGRJ | ASTG 10" MD 2 STEP REV HJ | 10" | 3.920 | 2.469 | 1 3/4 | 0.500 | 0.750 | 2.125 | 1.563 | 0.650 | 1.300 | 1/2 |
| HR-10 STGRJ | ASTG 10" MD 2 STEP REV HJ | 3.920 | 2.469 | 1 3/4 | 0.500 | 0.750 | 2.125 | 1.563 | 0.650 | 1.300 | 1/2 | |
| HR-12 MTGRJ | ASTG 12" MD 2 STEP REV HJ | 12" | 4.550 | 2.469 | 1 3/4 | 0.500 | 0.750 | 2.500 | 1.875 | 0.650 | 1.300 | 1/2 |
| HR-12 STGRJ | ASTG 12" MD 2 STEP REV HJ | 4.375 | 2.250 | 1 1/4 | 0.500 | 0.750 | 2.500 | 1.875 | 0.625 | 1.250 | 1/2 | |
| HR-15 MTGRJ | ASTG 15" MD 3 STEP REV HJ | 15" & up | 5.350 | 3.469 | 2 1/2 | 0.500 | 0.750 | 3.000 | 2.250 | 0.950 | 1.900 | 5/8 |
| HR-15 STGRJ | ASTG 15" MD 2 STEP HD REV HJ | 15" & up | 5.26 | 2.75 | 1 1/2 | 0.500 | 0.750 | 3.000 | 2.250 | 0.735 | 1.469 | 5/8 |
Heavy Duty 2 Step Rev
| PART NUMBER | SHORT DESCRIPTION | Chuck Size | A | B | C | D | E | F |
| HR-8 HTGRJ | ASTG 8" HD 2 STEP REV HJ | 8" | 3.286 | 1.969 | 1 1/2 | 0.313 | 0.500 | 1.750 |
| HR-10 HTGRJ | ASTG 10" HD 2 STEP REV HJ | 10" | 3.92 | 2.469 | 1 3/4 | 0.500 | 0.750 | 2.125 |
| HR-12 HTGRJ | ASTG 12" HD 2 STEP REV HJ | 12" | 4.550 | 2.469 | 1 3/4 | 0.500 | 0.750 | 2.500 |
| HR-15 HTGRJ | ASTG 15" HD 2 STEP REV HJ | 15"- 24" | 5.350 | 3.469 | 2 1/2 | 0.500 | 0.750 | 3.000 |
| HR-18 STGRJ | ASTG 18" HD 2 STEP REV HJ | 15"- 24" | 5.260 | 3.469 | 1 3/4 | 0.500 | 0.750 | 3.000 |
| HR-24 HTGRJ | ASTG 24" HD 2 STEP REV HJ | 24"- 36" | 6.942 | 3.969 | 3 | 0.500 | 0.750 | 3.000 |
| HR-28 HTGRJ | ASTG 28" HD 2 STEP REV HJ | 24"- 36" | 6.942 | 3.969 | 3 | 0.500 | 0.750 | 3.000 |
WAK 2 Step Rev
| PART NUMBER | SHORT DESCRIPTION | Chuck Size | A | B | C | D | E | F | J | K | L | BOLT |
| HR-WAK-200-RJ | ASTG 8" WAK HD 2 STEP REV HJ | 8" | 2.75 | 1.565 | 1.000 | 0.394 | 0.787 | 1.575 | 1.004 | 0.395 | 0.790 | 8MM |
| HR-WAK-250/315-RJ | ASTG 10" WAK HD 2 STEP REV HJ | 10" | 3.79 | 2.250 | 1.750 | 0.472 | 0.787 | 1.575 | 1.813 | 0.550 | 1.100 | 12MM |
| HR-WAK-400-RJ | ASTG 16" WAK HD 2 STEP REV HJ | 16" | 4.230 | 2.500 | 2.000 | 0.472 | 1.022 | 2.125 | 1.587 | 0.687 | 1.375 | 12MM |
| HR-WAK-500/630-RJ | ASTG 24" WAK HD 2 STEP REV HJ | 24" | 4.760 | 3.000 | 2.000 | 0.708 | 1.180 | 2.362 | 1.780 | 0.687 | 1.375 | 16MM |