LGB sells their "flex track" as 5 ft rail sections and separate tie sections 6" long. You buy a box of tie sections and a tube of rail. It takes 2 boxes of ties to use 1 tube of rail. You use a rail bender to shape each rail then slide the tie section onto the rail. If you don't need mucc flex track you can usually firn a hobby shop/dealer that will sel lyou what rail and tie sections you need. I usually use LBG section track where I can as the flex track is usually twice as expensive as the sectional track.