Package:60pcs 1.4mm Aluminum Crimping Loop Sleeve Double Barrel Ferrule Cable Material:aluminum Size:Approx 1.4mm in inner diameter Color:silver as the picture show and may slightly different from the picture due to computer piexl Made of premium aluminum,sturdy,durable and anti-rust, can be used for a long time.Both ends of the crimping loop by pliers, vise, compression tools. Double holes aluminum sleeve are easy to use can easily fix cable, you could simply use a vise or pliers to compress them. Great used for picture hanging wires, dog leashes, clothes lines or anything else that require strong cable, ect.And can meet your different needs in daily life.