to 1/2" line, 1700 lbs Schaefer Stand Up Spring Block swivels 360' and uses a Delrin(tm) Ball Bearing Sheave 706-62

Stand Up Spring Block swivels 360' and uses a Delrin(tm) Ball Bearing Sheave. Large Diameter Base distributes loads. Delrin(tm) Base included. Boats to 34'. Sheave Dia. 2-2/8" (60 mm), Max Line 1/2" (13 mm), Dia. includes urethane base 3-3/8" (86 mm), He