Product Description Harken 27mm End Control — Set of 2High-performance end controls allow the installation of 2:1 to 4:1 purchases. Designed for high-performance, free-running systems, Carbo control blocks with Delrin® ball bearings let cars instantly adjust and release under load. Assemblies secure to track, eliminating additional holes. Tough one-piece bases are machined from a single piece of aluminum. Delrin is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates.Specifications: Length (in) 4 1/2 in Footnote Fasteners included Sheave Ø (mm) 40 mm Sheave Ø (in) 1 9/16 in Length (mm) 114 mm Width (mm) 49 mm Width (in) 1 15/16 in Maximum line Ø (mm) 10 mm Maximum line Ø (in) 3/8 in Fasteners (mm) 8 PH mm Maximum working load (kg) 159 kg Maximum working load (lb) 350 lb Breaking load (kg) 397 kg Breaking load (lb) 875 lb Height above track (mm) 33 mm Height above track (in) 1 5/16 in Weight for pair (g) 574 g Weight for pair (oz) 20 oz Purchase 2:1 / 3:1