Adria Marine | Ronstan blocks - 20 mm series

20 mm series

Browse our category "20 mm series" to find all the Ronstan blocks, 20 mm that we deal in our shop. Everything you need for the boat can be found on our website at or at our Adria Marine shop. Over 10,000 products for boating in the catalog. Fast shipping throughout Italy and the world.

Single block series 20
The incredible Series 20 Orbit Block ™ is capable of charging loads up to 250 kg (550 lb), while it weighs only 9 grams. It is so light weight that must be carried out
Control block double with becket series 20mm
Last items in stock
Control block double with becket series 20mm. Mainly used on dinghies such as the Laser for the running rigging as the boom vang.
Bozzello singolo girevole serie 20mm
Ronstan 20mm series single swivel block suitable for control lines, vangs or cunninghams for small dinghies type boats
Single block with becket series 20
Last items in stock
The pulleys acetal molded with precision ball bearings on stainless steel or Torlon® offer high performance and low friction. Can be fitted with a shackle in either of two planes to allow correct alignment of the block.