https://astronomytechnologytoday.com/2019/06/17/iotpron-cem40/
iOtpron CEM40 & CEM40EC Telescope Equatorial Mounts | Astronomy Technology Today
Jul 12, 2020 - The iOptron CEM40 and CEM40EC are the company's next-generation, center-balance equatorial mounts at15.8 lbs.yet can support a payload of up to 40 lbs.
equatorial mountstelescopeastronomytechnologytoday
https://altairastro.com/ioptron-counterweight-extension-bar-for-cem406070--gem45-with-28mm-bar-11814-p.asp
iOptron Counterweight Extension Bar for CEM40/60/70 & GEM45 with 28mm Bar
This is an original replacement counterweight shaft (w/o CW safety screw) and the extension bar for the iEQ45 Pro/iEQ45/GEM45. This is also the
extension barioptroncounterweight