Here is a link for the EFNEO GTRO 3-Speed Pedal-Crank Gearbox... showing its specifications.
https://nfixed.com/products/new-gtro-3-speed-internal-chain-set-gearbox-formerly-efneo?srsltid=AfmBOopRqOD7Yh8SmCDG7_umAR-Lk5vZmwEKv09EF41fNiQELR8bcBEa

Also Here...
https://bikerumor.com/review-efneo-3-speed-gearbox-crankset-makes-easy-keeps-clean/

Here is another very detailed review URL...
https://road.cc/content/review/227796-efneo-gtro-3-speed-front-gearbox

The main video on this listing, is a very detailed Video-Review of the front pedal-crank gearbox, and they include an email to wiktor@efneo.com in case you ever should encounter any issues with your system; and they claim very rapid replies to support you directly by their experts.

This is a very high-quality crank with internal gear set that provides exceptional durability and cleanliness to your manual propulsion system on your bicycle or eBike, where you split your battery-power time up with manual pedaling efficiency. In this case, an eBike would not require a large number of gears or speeds; given that you're pedaling in order to maintain battery life once rolling... or you are assisting your eBike motor and thus, battery capacity, by pedaling at the start, from a stationary position; to overcome inertia. This is where pedal-assist can really add distance to your battery performance. Three speeds is ample to choose from in this regard.

It Is A Brand New still-in-box kit, with all of the parts you need, except your add your preferred pedal-sprocket tooth-configuration of choice to go with your bike's rear drive sprocket and drive chain type.
Talk to your local bicycle mechanic at a good shop, and they'll advise your further about the right chain-sprocket for your preferences. My understanding... is that you can combine this technology with existing rear internal hub gear mechanisms on your bike, to add a wider variety or useable gear ratios for your custom bike or work-bike. This makes a lot of sense when you are seeking performance improvements or when time and energy equate with how you earn while riding a cargo-bike, hauling loads.

The other nice feature when installed on a bicycle-style eBike or Cargo Bike, is that if your battery-power system or motor should ever fail you... you have good old fashioned manual pedal-power to get you through the crunch; either to safety, or to a place where the bike can be worked on.

Photos To Come Shortly! I'm just opening-up the box to photograph things today, Saturday May 9th, '26... so I'll get on that after some grocery errands. Please Return For Those Photos At Your Earliest Convenience.
Thanks for your patience!

LOCAL ONLY. NO SHIPPING.
No Distance Prepayments. C.O.D. Final Sale.

Email-replies are best kindly, as I am not tethered to a phone while working. I can break-free to message you in-reply, and we can arrange a phone-call to set-up a one-on-one for viewing and pick-up, at your earliest convenience. Thanks for understanding.

M6N 0B3 is in the St. Clair Ave. West and Keele Street area, just a tad west of The Stockyards district.

You Will Be Very Pleased!