Ronstan's Series 50mm 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. They have impact and UV-resistant reinforced Nylon cheeks and a grade 316 stainless steel load strap. For durability and a long service life, these blocks are the right choice for sheets, halyards, vang, and spinnaker control line applications for cruising and racing on boats up to 33 in (10m).
Ronstan's cheek blocks can be mounted on masts and booms using the curved surface adapter. They can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave.
Mount with 3mm x 6mm (1/4 in.) stainless steel fasteners (not supplied).
|Breaking Load (lbs)||2200|
|Breaking Load (kg)||1500|
|Safe Working Load (lbs)||1000|
|Safe Working Load (kg)||500|
|Sheave Diameter (in)||2|
|Sheave Diameter (mm)||50|