RONSTAN Series 70 Orbit Block Accessory, Double Dyneema Link
Series 70 BB Ball Bearing & RT Ratchet Orbit Blocks
The Orbit Blocks are designed to handle lines up to 1/2" diameter. Ideal for sheet applications on keelboats up to 30' and control lines on larger boats.
Sheave: Carbon reinforced, PTFE impregnated engineered nylon
Ball Bearings: Series 70 BB Ball Bearing & RT Ratchet Orbit Blocks
Sheave Size: 2-3/4" (70mm)
Line Dia.: 1/2" (12mm)
Cheek Material/Finish: Glass-reinforced nylon