I have one Waivien collar for mag D size, outside Dimeter about 30mm, just fit inside of Mag D with about 1mm gap.
bought here:
http://www.wavien.com/shop/rlt-collars/rlt-collar/
selling $39.95
shipping $2.95, USA only. Paypal only
this is the thing that makes DEFT X to go from 600K lux asphric monster into a 900K lux super monter, about 50% gain with nothing to lose, only works for aspheric.
I only have one, 1st I’ll take it gets it
SOLD