Need new cranks

Hello, thank you for posting,

Please review the 39-253LB and 39-253RB or the 39-438B and 39-439B operators. The main difference is the guide at the end of the straight arm. The original will need to be removed from the track to compare. 

Take a look at the video below for additional information. 

Also see the 39-451 and 39-452 or the 39-375 and 39-376 handle/covers depending on style preference. Review all dimensions and let us know if you have any additional questions!