This is stupid!... The Sparrows progressive locks problem and a really stupid way of fixing it. : r/lockpicking
KSEC Pro Pick Lock Picking Training Lock (Standard Pins) - Hands-On Learning Tool - KSEC, Physical Security Engagement Tools, Practice & Training Locks, Practice & Training Locks, Pro Pick Lockpicking - KSEC Solutions
Sparrows Progressive Locks - 4 Step Lock Training Set - Physical Security Engagement Tools, Practice & Training Locks, Sparrows Lock Picks, Sparrows Practice Locks - KSEC Labs