uxcell Nema 8 4 Wire 1.8 Degree CNC Stepping Stepper Motor 28mm 0.6A 2oz.in Product Name : Stepper Motor;Model No. : 20HS2806A4;Frame Size : 20 x 20mm (Nema 8);Step Angle : 1.8 Degree Voltage : 1.8V;Rated Current : 0.6A;Motor Resistant : 3.2 Ohm;Motor Inductance : 0.9 mH Holding Torque : 1.4 N.cm/ 2 oz.in;Detent Torque : 0.2 N.cm/ 0.28 oz.in;Rotor Inertia : 2.5g.cm2;Shaft Diameter : 4mm/ 0.16" Shaft Length : 20mm/0.78";Motor Length : 28 mm/1.1";Cable Length : 25cm / 9.8";Mouting Hole Dia : 2mm/0.08" Material : Metal, Plastic, Electronic Parts;Color : Black, Silver Tone;Weight : 50g;Package Content : 1 x Stepper Motor (Non-OEM)