Bicycle Alarm lock 1.Cylinder with anti-drill, anti-saw and anti- pick protection 2.Corrosion protection 3. Available in different length 4.Durable soft nylon sleeve provides acratch protection 5.Easily transported under the seat , as the chain can be folded compactly 6.You can lock your bike/motorcycleby itself,or attach it to a fixed object(e.g. fence,lamppost,road sign...) Additional elastic coating is available for better feeling and looking Packing detail: SizeUnit packageOuterCtn MeasG.WN.WDia8*8*900mmcolor card sleeve10pcs46*15.5*14cm16kgs15kgs Dia10*10*900mmcolor card sleeve6pcs 46.5*21.5*13.5cm14kgs13kgs