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Ronstan Series 20 BB Block, Single Cheek

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: $19.84
$16.86
(You save $2.98 )
(No reviews yet) Write a Review
SKU:
RONRF20151
UPC:
9316800255603
Availability:
Y
Weight:
0.50 LBS
Shipping:
Calculated at Checkout.
Type:
Single
Size:
20 mm
Ronstan Series 20 BB Block, Single Cheek
Manufacturer part #: RF20151

Technical Description
Features
American
Metric
Description
Series 20 BB Single Cheek Block
Sheave Ø
3/4 in
20 mm
Maximum Rope Ø
1/4 in
6 mm
Maximum Working Load
550 lb
250 kg
Breaking Load
1210 lb
550 kg
Weight
0.5 oz
14 g
Manufacturer part #: RF20151Ronstan Series 20 Ball Bearing Blocks

  • Low friction
  • High static and dynamic load capacity
  • Lightweight
  • Double through-bolt mounting for maximum load capacity

    • Precision moulded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction.

    Applications
  • Dinghy control lines
  • Dinghy vangs
  • Cunninghams
  • Traveller controls

    • Materials
  • Stainless steel ball bearings
  • UV stabilised Acetal sheave
  • Grade 316 stainless steel load strap and head fitting
  • Impact and UV resistant, fibre reinforced Nylon cheeks