Fixed length extension EXT model columns are constructed of 11/2 inch 11.5 NPT schedule 40 pipe threaded and notched on both ends for safety locking.
- EXT models are 1-1/2 inch - 11.5 NPT Schedule 40 pipe threaded on both ends. Notched for use with screw to provide safety and security
- EXT model extension column lengths measure 3.5 inch longer then stated drop to provide finished drop length for various mounts (i.e. EXT101 measures 15.5 inch)