Ronstan Shocks

$ 19.95

Ronstan Shocks -2 Pack

-suits up to 5mm line

In stock

Product Information

Ronstan Shocks -suits up to 5mm line

Small SHOCKS, Blue 2 Pack

Ronstan Shocks are line blocks without sheaves.

They are used in various line and attachment applications on sailboats.

Ideal for dinghies and smaller yachts using lines under 5mm.


  • Control lines: Can be used for fine-tuning sheets (lines controlling sail trim) or other control lines requiring adjustments during sailing.
  • Halyards: Used for raising and lowering sails with winches or manually.
  • Vangs and runners: Employed on lines controlling mast bend, sail twist (vang), and boom position (runner).
  • Temporary rigging: Useful for creating temporary connections for specific manoeuvres or rigging adjustments.
  • Other applications: Applicable for various purposes, such as ladder hoists, motor hoists, lazy jacks (lines holding sails in place), sail covers, and tie-downs.


  • Lightweight and compact: Ideal for applications where weight reduction is crucial.
  • Low friction: The smooth body allows for efficient line movement with minimal friction compared to some traditional blocks.
  • Versatility: Applicable for various control line and rigging needs.
  • Cost-effective: More affordable compared to some complex blocks with multiple sheaves.
  • Easy maintenance: Simple design requires minimal maintenance and cleaning.


  • Limited load capacity: Due to their design, they are not suitable for handling extremely high loads
  • Not suitable for heavy lines: May not be as effective for thicker lines due to increased friction compared to blocks with sheaves.
  • Not ideal for high-wear applications: As they lack the protection of a sheave, they might wear faster with continuous use under high loads.


  • Performance & versatility.
  • Ultra lightweight.
  • Ultra compact.
  • Colour coded.
  • Impact resistant.
  • Small line optimised.
  • High load capacity.
  • Soft attachment compatible


  • Vangs
  • Tweakers
  • Barberhaulers
  • Lazy jacks
  • Cunninghams
  • Kite bridles
  • Leech lines
  • Trapeze elastics
  • Various control lines


  • Anodised aluminium


  • L.: 350kg
  • W.L.: 175kg
  • Weight: 2.5kg
  • Rope Ø: 1.8 - 5.0mm
  • Height: 5mm
  • Length: 22.9mm
  • Width: 9mm


  • Blue -also available in Red and grey