built-in block / ball bearing / single / max. rope ø 5 mm
RF15711 Ronstan



  • Type:

    built-in, ball bearing

  • Number of sheaves:


  • Maximum line diameter:

    max. rope ø 5 mm

  • Application domain:

    for sailboats

  • Working load:

    120 kg (264.6 lb)

  • Breaking load:

    550 kg (1,212.5 lb)


FEATURESSmallest and lightest ball bearing block availablePrecision moulded acetal sheave running on stainless steel ball bearings provide high performance & low frictionSingle loop head blocks include an O-ring to separate running line from head lashing or fixingFeatures a flush rivet to minimise cutout and facilitate installation.