Chain types are identified by number like a number 40 chain. The rightmost digit is 0 for chain of the standard dimensions; 1 for lightweight chain; and 5 for roller less bushing chain. The digits to the left indicate the pitch of the chain in eighths of an inch. For example, a number 40 chain would have a pitch of four-eighths of an inch, or 1/2", and would be of the standard dimensions in width, roller diameter, etc.
The roller diameter is "nearest binary fraction" (32nd of an inch) to 5/8ths of the pitch; pin diameter is half of roller diameter. The width of the chain, for "standard" (0 series) chain, is the nearest binary fraction to 5/8ths of the pitch; for narrow chains (1 series) width is 41% of the pitch. Sprocket thickness is approximately 85-90% of the roller width.
Bicycle Chains designed for road, mountain, cyclocross, gravel and more. Compatible with Shimano, SRAM, and Campagnolo components. Less noise. Built for strength and speed.
kmcchain.us
Or, if you feel a little more spendy you can take your pick of DID, EK, or RK chains as they all offer 415h chains as well and are all excellent brands.
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