Tamiya Pulley Unit Set Educational Series

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

FEATURES:
Sheave set is designed to connect to a selected model kit such as a
    leaping dophin, an elevator, a moving pet dog, 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 sheaves, rivets, a base, and motor holder.
Battery operated.
Small phillips screws for strong construction.
Structure of wheel is kept simple for maintenance purposes like
    changing the belt, if needed.
Pulley turns easily, permitting a pet to wag his tail, an alligator
    to open his mouth, or a dolphin to "jump" into the water, among
    other chosen motions.
Designed for relatively little and simple models.
Reverse rotation of wheel is possible.
Pictorial instructions included.

INCLUDES:
One Sheave Unit Set

REQUIRES:
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 little parts.
Instructions and box language composed in Japanese and English.