Product Features1. used for: rock climbing; caving; mountaineering; rescue; hiking etc.2. Static tension: 20KN; Rolling tension: 10KN3. Material: alloy4. Size: 4.4cm(L) X8.2cm(W)5. Weight: about 87g6. CE 1019 EN 12278 approvedPackage1 *climbing pulleyNote:This pulley can only be used for O-type symmetry master lock connection; protect side panel force symmetry. Tilt stress can lead to side panel deformation so that pulley is damaged. Cannot be used for cross; aerial cableway etc faster sport.