Check the listing for details. BOX ONE Prime 9 126L DLC Black Bmx Chain. Color: Black, Condition: New. Listed at 49.99 USD. The Box One chain is protected by our dual-coating. We start with Nickel plating which aids in corrosion resistance and then top it off with the "Diamond-Like Carbon" layer.The DLC is as fancy as it sounds; a synthetic diamond nano-coating that turns up the volume on hardness, wear-resistance, and slickness.All Prime 9 chains have chamfered shifting edges, solid plates and solid pins to safeguard durability.The Box unique inner link spacing is engineered to grab those modern wide/narrow chainrings. Box chose to modernize the 9-speed platform due to the chain's spirited reputation.They also work well with BMX 3/32" Chainrings and Cogs.FEATURESBox Best Performing ChainDurable Dual-Coating DLC & Nickel ProtectionDurable Hardened Solid PinsWide/Narrow Chainring CompatibleCompatible with BMX 3/32" Chainrings and CogsCompatible with most 10,11, & 12-speed wide / narrow chain rings.Prime 9 Technology™