Need to teach employees how to install that new lock ? Why wait until you get to the jobsite ? Practice and get it right BEFORE you start the project. TRAINING BLOCKS ARE AN EXCELLENT WAY TO EVALUATE POTENTIAL NEW HIRES ! If they say they're experienced with installing a particular lock....just give them a lock and the Training Block and see what they really know BEFORE you hire them. TRAINING BLOCKS are ideal for Cylindrical Locks, Mortise Locks, Deadlocks. Mortise Block comes with pocket and ready for you to drill the holes you need for your mortise lock. The Cylindrical/Deadlock Training Block comes with a 2-1/8" bore and latch mortise. INVEST IN LEARNING TO DO IT RIGHT OR SPEND MONEY CORRECTING MISTAKES !