NEMA 23 bowden extruder MK7 1,75mm

Nema23 mount https://ru.aliexpress.com/item/NEMA-23-57-Steppr-Motor-Accessories-Bracket-Support-Shelf-Mounting-L-Bracket-Mount-Step-Stepping-Stepper/32325368491.html?spm=2114.13010608.0.0.tCo2Wz&detailNewVersion=&categoryId=100007155

Nema23 https://ru.aliexpress.com/item/Special-8MMshaft-Wantai-4-lead-Nema23-Stepper-Motor-57BYGH627D8L25-2-270oz-in-76mm-3-0A-Router/32645762883.html?spm=2114.13010608.0.0.tCo2Wz

MK7 Drive Gear Bore 8mm 1.75mm https://ru.aliexpress.com/item/Printer-Accessori