They are made from plastic so they do flex a little. These do the following Radius.
Brand New Lamps Posts Metal & Plastic N Gauge Under 14 Years White LEDs
KATO Plastic N Gauge EF210 300 3092-1 Railway Model Electric locomotive blue
KATO Plastic N Gauge Tobu Railway Series 8000 Late Update Tojo Line
KATO Plastic N Gauge EF210 300 3092-1 Model Train Electric Locomotive Blue
5pcs N Gauge Model Train Cupronickel Flex Track 50cm with Joiners Track Nails
8575 - Cut-n-Trim Flex-I-File
