A New Genuine Meyer Compact Trip Spring (Meyer # 12978). These are the compact springs used on the lighter blades. They are 3" around and 7" from end to end.
These came on the Meyer and Diamond blades below:
(TM=Two meter) TM-5, TM-6, TM-6.5
(TMP= Two Meter Poly) TMP-6.5, TMP-7
STL-7.5,
(DP= Drive Pro) DP-5, DP-6, DP-6'8"
SVL, and a rare Diamond TM blade
Here is a link to the TM blade brake down.