Description The newest Zircon offerings are six models with 29 mm sheave diameters. These expand the Zircon offering from eight models to eighteen. Zircon is not an all-purpose alternative—no block is. But these smaller sizes make Zircon appropriate for control lines where multi-part purchases are required. Zircon reacts immediately. So, when the pressure gets light and you ease that 24:1 Cunningham rigged under the deck or want to let the jib lead forward for some more power through the chop, you will get response. Sheave Ø (mm) 29 mm Sheave Ø (in) 1 1/8 in Length (mm) 43 mm Length (in) 1 11/16 in Weight (g) 20.4 g Weight (oz) 0.72 oz Maximum line Ø (mm) 6 mm Maximum line Ø (in) 1/4 in Maximum working load (kg) 160 kg Maximum working load (lb) 350 lb Breaking load (kg) 480 kg Breaking load (lb) 1050 l
