Vexta series, NEMA 17 (1.65 in sq) , 1.8deg (200 steps/revolution) 2-phase stepper motor with 6 wires. Single round shaft with flat.
This is PK series replacing older PX series.
Holding torque: 22.4 oz-in for unipolar and 28.8 oz-in for bipolar-series connection.
Very small current for energy saving operations is rated as 0.31A for unipolar and 0.22A for bipolar-series connection. Rated 12V (17V for bipolar). Requires power supply with voltage greater than 12V. Minimum recommended is 17V for most drivers. We suggest to use 24V power supply for both unipolar and bipolar connection. Works great with any unipolar or bipolar driver.

Manufactured by Oriental Motor Co., Ltd.
Assembled in USA.
This version has custom wires 7" long.
More information about this motor can be accessed through manufacturers website:
Vexta PK243-03AA