Tamiya Pulley Unit Set Educational Series

This is a Sheave Unit Set for Numerous Designs.
    It's from Tamiya for extremely skilled model builders.

FEATURES:
Sheave set is designed to attach to a chosen model set such as a
    leaping dophin, an elevator, a moving dog, alligator, or revolving
    bird cage.
Contains white, black, and gray plastic parts connected to sprues.
Other parts include an electrical motor, belt guides, slim belts,
    circular pulley-blocks, rivets, a base, and motor holder.
Battery operated.
Small phillips screws for strong construction.
Structure of wheel is kept simple for maintenance functions like
    changing the belt, if needed.
Pulley turns easily, allowing a canine 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 simple models.
Reverse rotation of wheel is possible.
Pictorial guidelines included.

INCLUDES:
One Sheave Unit Set

REQUIRES:
Assembly
Battery
Small 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)

REMARKS:
Keep out of reach of kids. Contains small parts.
Instructions and box language composed in Japanese and English.