| Step block |
 |
| Step block |
|
| ITEM NO. | Capacity of Full block | Height of 1/2 block |
| Standard steel blocks 1" wide | ||
| A611-540 STB1 | 3/4 to 1-1/2 | 1-1/8 |
| A611-550 STB2 | 1-1/8 to 2-1/2 | 1-3/4 |
| A611-560 STB3 | 2-1/2 to 6 | 3-7/8 |
| Standard steel blocks 1-1/2" wide | ||
| A611-570 STB4 | 1-1/2 to 3-3/4 | 2-1/2 |
| A611-580 STB5 | 2-1/2 to 6 | 3-7/8 |
| A611-590 STB6 | 3-1/2 to 9 | 5-1/2 |
| Standard steel blocks 2" wide | ||
| A611-610 STB7 | 1-1/2 to 3-3/4 | 2-1/2 |
| A611-620 STB8 | 2-1/2 to 6 | 3-7/8 |
| A611-630 STB9 | 3-1/2 to 9 | 5-1/2 |