Length: About 8Cm Features:Bicycles Chain Hook For Bicycles Chain Repair. It Is A Helper For Chain Repairs.Easily To Use: Just Place The Chain Hook On Chain So That The Chain Not Fall Down The Sprocket.Make Of Stainless Steels Materials, Not Easily To Rusts And Enduring.Arched At Both End And Convenient For Entry Into The Chain Slot.It Can Hook Both End Of The Chain, So That Its Convenient To Cut And Connecting The