Schaefer Half-Moon Mast Base/Hinged/Alum. Max Line 3/8" (10 mm) Triple Sheave(55mm) Designed to be worn together

Designed to be worn together with most fall arrest harnesses

Width: 3 31/32 in

Thickness - 1 13/16" (46mm)

Length - 1 1/16"

20mm diameter alloy sheaves

Schaefer Half-Moon Mast Base/Hinged/Alum. Max Line 3/8" (10 mm) Triple Sheave(55mm) Designed to be worn togetherProduct Description Schaefer Half Moon Mast Base Hinged Alum. Max Line 3 8" (10 mm) Half Moon hinged base block. Heavy duty Stainless Steel base and cage ensure high strength. SS Springs keep block upright. Aluminum UC sheave features Nomex(tm) Teflon(tm) bearing with Delrin(tm) ball bearings for a low friction high strength sheave. Specifications: Fixed Alum. Sheave Dia.: 2 3 8 in. (60 mm) Max Line: 3 8 in. (10 mm) Max Wire: 3 16 in. (5 mm) Length: 4