RobotDigg is stepper motor, hollow shaft stepper motor and linear stepper motor factory.
Basic Stepper Motors GTW3.162.XXX:
Nema8, 8HY0001-20
Nema11, 11HY4403-20
Nema14, 14HY0006-20, 14HY0007-20A
Nema17, 17HS1011-20, 17HS3001-20B, 17HS5005-26B, 17HS6002-N27B
Nema23, 23HD4004-25, 23HS4404, 23HS6405, 23HD8434-34B
Geared Stepper Motors GTW3.162.XXX:
Nema17 Geared Stepper Motors:17HS1070-C5X, 17HS3001-C5X
NEMA23 Geared Stepper Motors
Hollow Shaft Stepper Motor:
Nema8 Hollow Shaft:8HY001-7SK,
Nema17 Hollow Shaft:17HS1001-12K62
Linear Stepper Motors:
Acme Leadscrew Threaded Rod Stepper Motor(External Drive),
NEMA14, 14HY0007-180N5, 14HY0007-300N5
NEMA17, 17HS3001-150N, 17HS3001-210N, 17HS3001-280N, 17HS3001-350N