Windup Toy Boat Motor

Windup Toy Boat Motor With Drive Shaft, Motor Size 1-5/8" x 1-1/4" x 1-5/8" High, Plus Additional Length of Shaft - 2-1/2"  In mm : 43.1 x 31.3mm for the housing.  Note that the housing is open to accommodate the spring.  Shaft is 76.7mm through the housing.