Tamiya Pulley Unit Set Educational Series

This is a Wheel Unit Set for Different Designs.
    It's from Tamiya for really skilled design builders.

FEATURES:
Wheel set is created to connect to a chosen design package such as a
    leaping dophin, an elevator, a moving pet, alligator, or revolving
    bird cage.
Contains white, black, and gray plastic parts attached to sprues.
Other parts consist of an electrical motor, belt guides, skinny belts,
    circular pulley-blocks, rivets, a base, and motor holder.
Battery operated.
Small phillips screws for solid construction.
Structure of sheave is kept basic for upkeep purposes like
    changing the belt, if needed.
Pulley rotates easily, enabling a dog to wag his tail, an alligator
    to open his mouth, or a dolphin to "leap" into the water, among
    other chosen motions.
Designed for relatively small and basic models.
Reverse rotation of sheave is possible.
Pictorial guidelines included.

INCLUDES:
One Wheel Unit Set

REQUIRES:
Assembly
Battery
Small Phillips Screwdriver
Modeling Knife
Sprue Cutters
Long Nose Pliers

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

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