Barton TUPHblox Block Single Fixed Bow
TUPHblox are made from a phenolic resin laminate with cotton reinforcement commonly known as Tufnol. It is strong durable and lightweight. All blocks are made with stainless steel (316) bindings and run on brass bearings
| Size 1 | Size 2 | Size 3 | |
| Weight | 49 g | 66 g | 92 g |
| Max rope diameter | 10mm (3/8″) | 12mm (1/2″) | 13mm (1/2″) |
| Sheave Size | 30mm (1 3/16”) | 35mm (1 3/8”) | 45mm (1 3/4”) |
| Break load | 700kg (1543lbs) | 740kg (1630lbs) | 770kg (1694lbs) |
| SWL | 350kg (771lbs) | 370kg (815lbs) | 385kg (848lbs) |

