This is a like brand new Righetti Ridolphi brand 40mm kart axle. It's a "B" model which means it's a medium when it comes to flex. This axle was bought and installed but never ran. The only evidence of wear is the set screw marks. I've had it in the netting so it doesn't get scratched up. Why buy a new one for $130-140 when you can get this one a lot cheaper. It's about 41" long