These blocks eliminate twisting from rope rigging systems with smooth, ball-bearing action. Each precision-fabricated alloy block has a unique button-activated release feature that allows instant access to the sheave for midline attachment.
| Block | MBS | WLL | Maximum Rope Diameter | Weight |
| 1.1 | 23.9Kn (5,395lbs) | 4.9Kn (1,124lbs) | 13mm | 5.1oz |
| 1.5 | 35.9Kn (8,092lbs) | 7.9Kn (1,798lbs) | 13mm | 9.2oz |
| 2.6 | 80Kn (17,985lbs) | 20Kn (4,496lbs) | 13mm | 1.9lbs |
| 4.5 | 133.5Kn (30,000) | 26Kn (6,000lbs) | 3/8" - 3/4" | 5.8lbs |