<http://schema.org/description>
"Designed to work with Series 22 Ball Bearing Traveler Systems (RC12231), this Control Sheave Addition Kit fits neatly onto the car body. Made with grade 316 stainless steel cheeks and fasteners and alloy sheave. Ball bearing upgrade sold seperately."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.apsltd.com/series-22-control-sheave-addition-kit-suits-rc12231.html>