Material:Hot wrought aluminum magnesium alloyFeature:Good weight bearing，Easy to use，AestheticsPlace:Climbing，Mountaineering，Outdoor Travel，Exploration，Caving，RescueSize:1cm=0.39"Length*Width=7.5*11.5cm=2.9"*4.5"Maximum opening=2.5cm=0.98"Suitable Rally:25NK(about 2500kg)Note:1.Do not touch chemicals，avoid contact with sediment 2.Please put in a dry and ventilated place，avoid contact with the heat source 3.Life should not exceed five years，periodically lubricate 4.Improper use of insurance deduction after the timely replacementColor may have slight differences，please understand.