Tamiya Pulley Unit Set Educational Series

This is a Sheave Unit Set for Different Designs.
    It's from Tamiya for extremely knowledgeable design builders.

FEATURES:
Pulley-block set is designed to attach 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 electric motor, belt guides, slim belts,
    circular pulley-blocks, rivets, a base, and motor holder.
Battery operated.
Small phillips screws for strong construction.
Structure of pulley is kept basic for upkeep purposes like
    changing the belt, if needed.
Pulley rotates freely, allowing a pet to wag his tail, an alligator
    to open his mouth, or a dolphin to "leap" into the water, amongst
    other selected motions.
Designed for relatively little and basic models.
Reverse rotation of pulley is possible.
Pictorial instructions included.

INCLUDES:
One Pulley-block Unit Set

NEEDS:
Assembly
Battery
Little 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:
Keep out of reach of children. Consists of little parts.
Instructions and box language written in Japanese and English.