General International:

• Number of speeds (4) 13, 26, 33 and 66 fpm (4, 8, 10 and 20 m / min).
• Number of rollers 4
• 5/8 ”(16 mm) roller suspension
• Roller dimensions 4 3/4 ″ x 2 1/4 ″ (121 x 57 mm)