KMC Bike Bullet Pin Chain Connector For HL Series Wide - 1/2" X 1/8" | eBay
KMC HL710 Bullet Pin Chain Connector - Pushys
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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