Features: <br>Lock with open chambers on all the moving parts that allow you to see how it work. <br>With the good lock structure and the stable working conditions, the repeatability is also well. <br>You can see clearly that how the pians work when a key is inserted. <br> <br>Helpful: Helps you improve your lock opening skills after a short period of study and practice. <br>Good toys, Help your children improve their intelligence, practical ability and the great gifts to your friends. <br> <br> <br>Specification: <br>Lock cylinder: Mental + Acrylic <br>Color: Transparent / Blue / Green / Orange / Pink (Optional) <br>Material: Metal <br>Size: 7.9 x 2.3 x 5 cm / 3.11 x 0.91 x 1.97 inch (appr.) <br> <br> <br>Package List: <br>1 x Padlock <br>2 x Keys<br>1、Lock with open chambers on all the moving parts that allow you to see how it work. <br>2、With the good lock structure and the stable working conditions, the repeatability is also well. <br>3、You can see clearly that how the pians work when a key is inserted. <br>4、Helpful: Helps you improve your lock opening skills after a short period of study and practice. <br>5、Good toys, Help your children improve their intelligence, practical ability and the great gifts to your friends. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia