Features

Transparent lock: help you know the mechanism of the locks, useful for Locksmith to train and practice.
Friendly for beginners with instruction to introduce the mechanism of the several type of lock.
The three lock is well built, smooth working condition and durable for repetitive practice.
Nice toy for kids to improve their intelligence and practical ability and great gift for your geek friends.

Specifications:

Lock cylinder: Copper
Color: Transparent
Material: Metal
Size: 6.5 x 3.4x 2cm / 2.56x1.34 x 0.79inch (L x W x H)

Package Includes: