The CMC Rescue Pulley is a NPFA 1983 General Use pulley that optimizes a strength to weight ratio. Ideally used in wilderness/mountain rescue, swiftwater rescue or other technical situations where pack-in-weight is a concern. Designed with sealed ball bearings and an aluminum side plate, this pulley also has a low-profile stainless steel axle assembly. This pulley is designed to fit up to ½ inch (13 mm) rope. The CMC Rescue Pulley weighs 5.1 oz (145 g) and its sheave thread size is 1-½ by ½ inch (38 by 13 mm) and it comes in Red. This pulley is 3 sigma MBS rated at 55 kn (12,364 lbf).