Tamiya Pulley Unit Set Educational Series

This is a Pulley-block System Set for Various Models.
    It's from Tamiya for really experienced model builders.

FEATURES:
Sheave set is created to connect to a selected model package such as a
    leaping dophin, an elevator, a moving 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 pulley-blocks, rivets, a base, and motor holder.
Battery operated.
Small phillips screws for strong construction.
Structure of sheave is kept basic for upkeep functions 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 relatively little and basic models.
Reverse rotation of sheave is possible.
Pictorial directions included.

INCLUDES:
One Sheave System 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)

COMMENTS:
Keep out of reach of small children. Contains little parts.
Instructions and box language written in Japanese and English.