Ronstan Series 15 BB Block, Single block, becket, loop head

$18.77 (Ex. Tax)
$20.65 (Inc. Tax)
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  • Precision moulded acetal sheave running on stainless steel ball bearings provide high performance & low friction
  • Single loop head blocks include an O-ring to separate running line from head lashing or fixing
  • Smallest and lightest ball bearing blocks available – sheave diameter 15mm (5/8")
  • 120kg, 260 lb MWL (single block)
  • Shackle and soft-attachment compatible
  • Ideal for control lines, vangs, cunninghams, shock cord tensioning systems etc on dinghies and OTB catamarans to 5m (16ft)


Sheave Ø 15 mm
Max. Rope Ø 5 mm
Max. Cable Ø mm
Pin Ø mm
M.W.L. 120 kg
B. L. 550 kg
Weight 9 g