Tamiya Pulley Unit Set Educational Series

This is a Wheel Unit Set for Various Designs.
    It's from Tamiya for very experienced model builders.

FEATURES:
Wheel set is developed to attach to a picked model package such as a
    leaping dophin, an elevator, a moving pet, alligator, or revolving
    bird cage.
Contains white, black, and gray plastic parts connected to sprues.
Other parts consist of an electric motor, belt guides, skinny belts,
    circular sheaves, rivets, a base, and motor holder.
Battery operated.
Small phillips screws for strong construction.
Structure of sheave is kept basic for upkeep purposes like
    changing the belt, if needed.
Pulley turns freely, allowing a dog to wag his tail, an alligator
    to open his mouth, or a dolphin to "jump" into the water, amongst
    other chosen motions.
Designed for fairly little and basic models.
Reverse rotation of sheave is possible.
Pictorial instructions included.

INCLUDES:
One Wheel Unit Set

NEEDS:
Assembly
Battery
Little Phillips Screwdriver
Designing 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)

COMMENTS:
Keep out of reach of kids. Includes little parts.
Instructions and box language composed in Japanese and English.