System 42 - Genoa Ball Bearing Car, Double Roller Bearing Sheaves, 4:1 Purchase ø5 mm The BBB20 Single TD block

The BBB20 Single TD block is a 20mm ball bearing block designed for leading a line through a deck or coaming

Clevis pin ø: 6

The stainless steel ball bearings ensure smooth operation

406-001-18R rotates anti-clockwise when tensioning the line

Profile: Highbeam

System 42 - Genoa Ball Bearing Car, Double Roller Bearing Sheaves, 4:1 Purchase ø5 mm The BBB20 Single TD blockThe System 42 Genoa Car is designed for high performance jib genoa trim with 4: 1 purchase. The car is anodized aluminium, it runs on Torlon ball bearings and the sheet wheel is a ball bearing machined aluminium roller. It sits in a stainless holder supported by a stand up rubber. The control sheaves are RBB60 cheek blocks with Torlon ball bearings separated from each other in ball cages. This prevents ball to ball contact and makes for a low friction