Blocks, pulleys, and cams

Blocks, pulleys, and cams

If you want more information about the Viadana lock, look at the catalog here!



Scroll down our page to find the sheave Ronstan that you need!

Blocks Viadana

Scroll down our page to find the block in Viadana that you need!

Cam Cleat Clamcleat

Scroll down our page to find the cleat Clamcleat that you need!


Browse our category of sailing boat cleats and immediately find the cleat for your boat. In addition to the jaw chokes, we deal with the various bases to raise them, the various rope guides and the jumpers. Everything you need for the boat can be found in our Adria Marine shop on Over 10,000 nautical products in the catalogue. Fast shipping throughout Italy and the world.

U-bolt base 55mm
Last items in stock
U-bolt welded on the basis of the four-hole outer-Ø 55 mm - hole Ø mm 5
Terminal basket with restrictor
Terminal stainless steel with shock absorber sheave on ball bearings, sheave and cleat light alloy spheres
Choke, hand
Last items in stock
Save your hands when you pull the tops using the choke power grip. This choke has a variety of uses for windsurfers, sailors, yachtsmen etc
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
Small red-black c-cleats choke
Last items in stock
Small c-cleats choke tube with black base and red cover from Ronstan. These c-cleats are ultra-light, ultra-stiff and made of carbon fiber.