MMdex Pick Cutaway Inside View Padlock Lock For Locksmith Practice Training Skill Size: 7.5 x 4.5 x 2cm / 2.9 x 1.7 x 0.78inch approx (L x W x H) Cutaway Practice Disc Type Padlock Lock with open chambers on all the moving parts that allow you to see how it work You can see clearly that how the pians work when a key is inserted In perfect smooth working condition with no loose parts or pins will come out