Tamiya Pulley Unit Set Educational Series

This is a Pulley System Set for Numerous Models.
    It's from Tamiya for extremely experienced model builders.

FEATURES:
Sheave set is developed to connect to a picked model kit such as a
    jumping dophin, an elevator, a moving canine, alligator, or revolving
    bird cage.
Contains white, black, and gray plastic parts attached to sprues.
Other parts include an electrical motor, belt guides, skinny belts,
    circular wheels, rivets, a base, and motor holder.
Battery operated.
Small phillips screws for solid construction.
Structure of wheel is kept easy for maintenance functions like
    replacing the belt, if needed.
Pulley rotates freely, allowing a pet dog to wag his tail, an alligator
    to open his mouth, or a dolphin to "leap" into the water, among
    other picked motions.
Designed for fairly small and easy models.
Reverse rotation of wheel is possible.
Pictorial guidelines included.

INCLUDES:
One Sheave System Set

NEEDS:
Assembly
Battery
Little Phillips Screwdriver
Modeling Knife
Sprue Cutters
Long Nose Pliers

SPECIFICATIONS:
Base: Length: 4-3/4" (12.3cm)
Width: from 1/2" to 1" (1.5cm to 2.5cm)
Height: 1/4" (7mm)

REMARKS:
Keep out of reach of little kids. Includes small parts.
Instructions and box language written in Japanese and English.