Set of 21, 6mm Torlon Ball bearings. Cars with a 500 lb (227 kg) safe working load use Delrin balls (H176). Cars with a higher safe working load use these high-strength Torlon balls. Compatible with Harken small boat high load cars.
Material: Torlon® Ø (mm)6 mm Ø (in)1/4 in Quantity: 21 Weight (oz)0.5 oz Weight (g)14.18 g