Spring Loaded/Lined Slide/Stainless Steel for 1-1/4″ T-TrackDelrin sheave ensures smooth operation and high safe working load. Stainless Steel cheeks and stainless steel slider ensure reliability. Polyethylene liner and pin stop allow for easy adjustment.Specifications:Track Size 1-1/4″ x 3/16″ (32 mm x 5 mm)Max. Boat Length 33′ (10 m)Max. Boat Weight 12000 lbs. (5455 kg)Max. Sail Area 520 sq. ft. (48 m2)Sheave Diameter 2-3/8″ (60 mm)Max Line 1/2″ (12 mm)Length 4″ (102 mm)Width 1-9/16″ (39 mm)Height 4-15/16″ (126 mm)Bearing Height 2-3/8″ (67 mm)SWL 2250 lbs. (1020 kg)Weight 14 oz. (397 g)