Single Swivel Block with Becket

Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets. 

Features 
Lightweight 
Highest working load in its class 
Secure, versatile and secure attachement 
Low profile and compact 
Ultra low profile thru-sheave becket. 
Low friction 2-stage ball bearing system provides consistent performance over the full working load range. 
Sheave: High compression strength carbon black Acetal 
Ball Bearings: High compression strength Acetal 
Frame/Cheeks: Toughened, glass fibre reinforced Nylon 
Link: UV stabilised, multi-strand impregnated SK75 Dyneema® 

Uses:  
Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft) 
Halyard, vang and backstay applications on boats to 5m (16ft) 
Control line applications on larger yachts 

Specifications 
Sheave Ø: 1-3/16 in 
Max. Rope Ø: 5/16 in 
Pin Ø: N/At 
M.W.L.: 660 lb 
B. L.: 1320 lb 
Weight: 1.1 oz