KMC KK710 Kool Knight Half Link Chain SL KMC K710 Kool Knight Half Link BMX Chain has the added protection of full body armour to protect you when grinding. Besides being the strongest chain out there, it is awesomely sexy on the bike. A super durable chain that is 1/2" X 1/8" - 100 Links, pin length 9,5 mm. Nickel Finish. You think your bike looks hot? Put this chain on and you'll be sorry you didn't do it sooner!!!766759071028