Image Item No. Description  6216m  Electric, Motor 4.5V (Undetermined Type) X Catalog: Parts: Electric, Motor  3691  Electric, Motor 4.5V Housing 4 x 4 x 3 Catalog: Parts: Electric, Motor  47154c01  Electric, Motor 9V 4 x 4 x 3 1/3 (Undetermined Type) X Catalog: Parts: Electric, Motor  2838c01  Electric, Motor 9V 5 x 4 x 2 1/3 with Dark Gray Base Catalog: Parts: Electric, Motor  2984  Electric, Motor 9V Micromotor 2 x 2 Cover Catalog: Parts: Electric, Motor