* This is the 2 pcs Super Door Slit Opener set specially designed for the locksmith .* It is steel sheet: 0.15 mm， pack of 2 pcs and 1 handle.* Easy to install and dismantle.* This is used to slide in and unlock the latch.* The quality is much better than the plastic one. * THE PROFESSIONAL LOCKPICKS IS DESIGNED FOR LOCK MASTER ONLY.