Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes*. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.

  • Up to 20:1 holding power
  • Smooth easing of sheets
  • High performance cleating

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

    Part #: RF56120

Imperial Metric
Sheave Dia. 2 5/32 + 1 3/8 in. 55 + 35 mm
Max Rope Dia. 3/8 in. 10 mm
Max Cable Dia. - in. - mm
Pin Dia. - in. - mm
M.W.L. 1100 lb. 500 kg.
B.L. 2200 lb. 1000 kg.
Weight 7.2 oz 204 gr.

Click Image to Zoom
Ronstan Series 55 RT Orbit Block, Single Cleat Swivel, Auto
Original Price: $ 161.12
Price: $ 136.95

    © Site content copyright Mauri Pro Sailing, LLC. All rights reserved
    Site developed by Mauri Pro Sailing
    Mauri Logo