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Ronstan Series 50 AP Block, Fiddle, Becket

Note: Some prices may reflect updates due to international tariffs. Learn the latest about tariffs

Tariff Updates

We are observing how the tariffs are behaving. Lots of our products are imported from Europe and some of the manufacturers are not providing heads up about price increases. We will do everything in our power to hold the best prices, but please consider that in these uncertain times we may be forced to increase the prices without previous notification.

We really appreciate your understanding and look forward to working with you.

What does this mean for you?

  • Some imported products may show a higher price than usual.
  • Prices may change as shipping rates adjust globally.
  • We are committed to providing the best possible pricing and transparency at all times.

How we’re handling it:

  • We only adjust prices when absolutely necessary.
  • We continuously monitor shipping rates and update pricing accordingly.
  • We’ll clearly notify you if a product is affected by tariffs.

Questions? Feel free to contact our team for any clarification or assistance.

Updated: April 2025

MSRP: $83.35
$70.85
(You save $12.50 )
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SKU:
RONRF51510
UPC:
9316800241347
Availability:
Y
Weight:
0.50 LBS
Shipping:
Calculated at Checkout.
Size:
50 mm
Manufacturer part #: RF51510 1

Technical Description
Series AP Fiddle Becket Block
2 1/8 in + 1 5/16 in
54 mm + 34 mm
3/8 in
10 mm
3/16 in
5 mm
1650 lb
750 kg
3310 lb
1500 kg
6.2 oz
176 g
Manufacturer part #: RF51510Ronstan Series 50 All Purpose Blocks

  • Exceptionally high working loads
  • Low maintenance, long service life
  • Self-lubricating sheave
  • Slotted pin shackle eliminates fouled lines
  • Captive Lock™ universal head
  • Slotted pin shackle eliminates fouled lines
  • Snap fit removable becket pin
  • Spare Parts - RF51010 Replacement Becket Pin, RF150 Shackle

  • All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.

    Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required. Becket pin is removeable so line can be spliced prior to fitting and is ingeniously locked into position without the use of a clevis pin, split ring or tools.

    Applications
  • Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10 m (33 ft)
  • Ideal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems

  • Materials
  • Grade 316 stainless steel load strap
  • Impact and UV resistant, fibre reinforced Nylon cheeks