Ronstan's Series 20 Ball Bearing Utility Blocks are a range of lightweight blocks with high static and dynamic load capacities and versatile head fittings. They feature precision-moulded, UV-stabilised acetal sheaves running on stainless steel ball bearings to give high performance and low friction. They are ideal for Dinghy control lines and vangs, cunninghams and traveller controls. Features a low profile swivel hook for quick and easy attachment to stainless steel and webbing attachment points.
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Specifications
| Bearing type | Ball bearing |
| Bearing material | Stainless steel |
| Recommended line - Max Ø (mm) | 6 |
| Sheave Ø (mm) | 20 |
| Sideplate material | Nylon |
| Ratchet | No |
| Sheave material | UV stabilised acetal |
| SWL (kg) | 100 |
| NBL (kg) | 200 |
| Weight (g) | 21 |
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