Ronstan's Series 40 Utility Blocks feature sheaves running on Acetal or Torlon® ball bearings to provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range. Double and triple blocks have a swivel shackle head for full 360° rotation.
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Spécifications
| Bearing type | Ball bearing | 
| Bearing material | Acetal | 
| Cordage recommandé – Ø Max (mm) | 10 | 
| Ø réas (mm) | 40 | 
| Sideplate material | Nylon | 
| Winch | Non | 
| Sheave material | UV stabilised acetal | 
| Charge de travail (kg) | 600 | 
| Charge de rupture (kg) | 1400 | 
| Poids (g) | 194 | 
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