KMC HL1L Wide 1/8-inch Half Link Chain – The Bikesmiths
KMC Bullet Pin Connector: Fits HL710, HL810 and KK710 Chains, Card/6 | Tree Fort Bikes
Amazon.com : KMC Bike Chain HL1, Half Link BMX Chain, Maximum Adjustability & Great Looks, Super Smooth Single Speed Chain, Nickel Plated Bicycle Chain, Bike Chain with Bullet Joining Pin, 1/2" X