Harken 57 mm Carbo Triple Ratchet Block – Swivel, Cam Cleat
Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.
| Imperial | Metric | |
| Sheave Diameter | 2 1/4 in | 57 mm |
| Max Line Diameter | 3/8 in | 10 mm |
| Max Working Load | 1500 lb | 680 kg |


Harken 45mm Element Block - Fiddle
Harken 45mm Element Stand-Up Block - Becket
Harken 45mm Element Block - Swivel, Becket, Cam
Harken 45mm Element Block - Fiddle, Becket
Harken 45mm Element Stand-Up Block
Harken 45mm Element Double Block - Swivel
Harken 29 mm Triple Bullet Block - Cam Cleat
Harken 40 mm T2 Soft-Attach Block 