Ronstan Series 30 SP Single Orbit Block (with Nylatron Sheave) - Becket Hub, Swivel Shackle Head

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Product Description

Ronstan Series 30 Special Purpose Single Orbit Block (with Nylatron Sheave), Becket Hub, Swivel Shackle Head - RF35100D

  • Lightweight
  • Highest working load in its class
  • Secure, versatile and secure attachment
  • Low profile and compact
  • Ultra low profile thru-sheave becket
  • Self-lubricating Nylatron sheave and full contact bearing for high dynamic loads


  • Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft)
  • Halyard, vang and backstay applications on boats to 5m (16ft)
  • Control line applications on larger yachts


  • Sheave: High compression strength carbon black Acetal
  • Ball Bearings: High compression strength Acetal
  • Frame / Cheeks: Toughened, glass fibre reinforced Nylon
  • Link: UV stabilised, multi-strand impregnated SK75 Dyneema


  • Sheave Ø: 30 mm
  • Max. Rope Ø: 8 mm
  • Max. Cable Ø: - mm
  • Pin Ø: 4.0 mm
  • MWL: 300 kg
  • BL: 600 kg
  • Weight: 31 g
SKU: #

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