Petzl's MICROGRAB Cam-Loaded Rope Clamp features an ergonomic cam for rapid length adjustment. The integrated cam spring helps to avoid accidental snagging. This durable rope clamp is made from aluminum and can be used as a replacement rope clamp for the Petzl Microflip Lanyard. This rope clamp works with 3/8 - 1/2 inch (10 - 13 mm) rope. Specifications: Material(s): aluminum Weight: 150 g Rope Sizes: 3/8 - 1/2 in (10 - 13 mm) Certification(s) : CE EN 358 (with MICROFLIP lanyard), CE EN 567, EAC, NFPA 1983 Technical Use