We developed this part in Hopsej to be compatible with the Levitan rubber sole.
This part is designed for jumping stilts A-jump, LochJump and powerstrider.
After many months of development we have reached a weight of only 41 grams (old aluminium part had 74 g).
Price is for 1 piece
Also compatible with PowerStrider kids model - you only need to adjust upper spring's hole by file.