Part No. 2731 Harken ball bearing traveler cars with multipart purchases allow easy adjustment of loaded sails from the cockpit. Length (mm) 73 mm Length (in) 2 7/8 in Width (mm) 57 mm Width (in) 2 1/4 in Car body height (mm) 24 mm Car body height (in) 15/16 in Weight (g) 145 g Weight (oz) 5.12 oz Mainsheet block pin (mm) 5 Mainsheet block pin (in) 3/16 in Control block pin (mm) 4 mm Control block pin (in) 5/32 in Maximum working load (kg) 386 kg Maximum working load (lb) 850 lb Breaking load (kg) 1134 kg Breaking load (lb) 2500 lb Minimum curved track radius (m) 1.07 m Minimum curved track radius (ft) 3.5 ft