Our CJ-34 Multi Tool is perfect for pulling small springs, great for taking Tru-Arc rings off of cylinders and its a tremendous aid in taking the caps off of key-in-the-knob cylinders and rim cylinders such as those made by Lori, Arrow, AWI, Dexter, Sargent and Schlage. Other uses include depressing the pin to remove Corbin and Russwin knobs and taking the wedge out of Schlage A80 cylindrical locks. Those are just a few uses for this endlessly handy tool that was designed and developed by professional locksmiths.