Soundtraxx 881006 ECO-21PNEM Econami Steam Locomotives [21 Pin NEM DCC & Digital Sound Decoder] HO Trucks Bottoming Taps are useful for

Bottoming Taps are useful for threading blind holes

This HO Scale sized decoder has a small NCE No Halt Capacitor Module installed and uses an 8 pin NMRA plug to provide easy installation

when the locomotive encounters a grade and the engineer applies more throttle to get the train up the hill

(2) Each #551 Arch Bar Self Centering Trucks (assembled)

Soundtraxx 881006 ECO-21PNEM Econami Steam Locomotives [21 Pin NEM DCC & Digital Sound Decoder] HO Trucks Bottoming Taps are useful forSoundtraxx ECO 21PNEM Econami Digital Sound Decoder Steam Locomotives 21 Pin NEM This 1 amp digital steam sound decoder simply plugs into models equipped with an NEM supported 21 pin socket. Econami provides high quality, 16 bit sound, Hyperlight lighting effects, and Hyperdrive2 advanced motor control for enhanced realism. New features include Flex Map technology, an easy to use method for assigning any function to any function key. Product