Ronstan's Series 50mm Ball High Load Blocks have Nylatron sheaves and impact and UV resistant Nylon cheeks. They provide high performance and low friction, and are designed to withstand use with wire running rigging. The two-stage ball bearing system provides consistent performance over the full load range.
Ronstan's Captive Lock universal head can be fixed in either of two planes, or set to swivel freely.
They are used in mainsheet, spinnaker sheet, halyard and other primary applications on boats up to 33 feet (10m).
|Breaking Load (lbs)||3310|
|Breaking Load (kg)||1500|
|Clevis Pin (in)||3/16|
|Safe Working Load (lbs)||1760|
|Safe Working Load (kg)||800|
|Sheave Diameter (in)||2|
|Sheave Diameter (mm)||50|