Visible Tubular Cylinder Set (Training Use), Set of 2 cylinders

This Visible Tubular Cylinder Set is special designed for training use, to help beginners to learn how to open tubular lock by open tool within a short period. It is made of special material and high-tech skill to make it visible. The beginner can understand how tubular lock works very easily by it´s visble function.
One set includes 2 units, the white color cylinder is composed of normal pins, the black color cylinder is composed of spool driver pins to train beginners to practice by different open level.

Weight: 40 grams each piece, not include key
Cylinder: Made of high quality brass and chrome finishing

• Each piece with one spare key