Listing Detail Tabs

PLEASE NOTE: As I travel for the business, on a FEW occasions I may not be able to dispatch the day after payment, it may be up to a couple of days after. Cheers Mr Marine :)

One Top Quality RONSTAN Series 55 Orbit Ratchet Block,with BECKET, RF56111

Automatic and Manual ratchet in one block
Up to 20:1 holding power
Smooth easing of sheets
High performance cleating
Easily fitted and securely retained Dyneema® Link head

Sheave Ø 55 mm
Max. Rope Ø 10 mm
Max. Cable Ø - mm
Pin Ø - mm
M.W.L. 250 kg
B. L. 750 kg
Weight 82 g





Automatic ratchet block
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.

* Selected Series 55 models.

Awesome ratchet block holding power

Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.

Simple and s

Mr Marine Ltd "QUALITY PRODUCTS AT DISCOUNT PRICES"
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Shipping options

  • NZ Wide Metro$5.90
  • NZ Wide Rural Delivery$8.50
  • Seller allows pick-ups
  • Boat location: Auckland City, Auckland, NZ

Payment options

  • Other options
    Cash, NZ bank deposit