Beware impostors; the Singleator is the granddaddy and outperforms all others:
The Singleator features a triple-sealed spring, large cog capacity, chain guides, fully-adjustable chain line, floating pulley, and a stainless steel pivot bushing. The main body is forged, so it’s strong. We’ve gone with an 11-tooth pulley for smooth, quiet operation. And, it now works with both 1/8" (BMX) and 3/32" (geared bikes) chains.
2 springs included: Singleator is set up to push the chain down, with the other spring you can use it to push it up.
more information here:
surlybikes.com/uploads/downloads/NewSingleatorInfo.pdf |