100% brand new and high qualityFeature:Made of high-quality material, has good electrical conductivity and corrosion resistance.Diagonal cuts and increased contact area to improve power transfer and more accurate signal transmission.Easy and simple to use, has wide compatibility.It is compatible with for Momentum/for Senn-heiser HD598/HD518/K450 on-ear headphones.Earphone Plug Pin only, other accessories demo in the picture is not includedCompatible Models:for Momentum/for Senn-heiser HD598/HD518/K450 on-ear headphones.Specifications:Item Type: Earphone Plug PinMaterial: metalSize: length: app.5cm/1.9inColor: Gun-Color, Silver(Optional)Plug: 2.5mmOptional Type:A, MomentumB, HD598/hd518C, K450Quantity: 1 PCNote:No retail package.Transition: 1cm=10mm=0.39inchPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank youPackage Includes:1 x Earphone Plug Pin