The Eagle Mfg. Doohickey Torsion Spring is an alternate spring that can replace the coil spring that comes with the Eagle Mfg. Doohickey (idle lever). While the coil spring that comes with the Doohickey is good, some people prefer the direct tension the torsion spring gives to the Doohickey (the coil spring connects to a small stock lever behind the Doohickey).
- The Eagle Mfg. torsion Spring is an "upgrade" for the Eagle Mfg. Doohickey (idle lever).
- This alternate spring replaces the coil spring that comes with the Doohickey.
