POCKET SCREWDRIVERS 4-IN-1 ELECTRONICS | 3-IN-1 HVAC Klein Tools offers two new screwdrivers designed for your pocket. The Pocket 4-in-1 Electronics Screwdriver (32614) and the Pocket 3-in-1 HVAC Screwdriver (32613) both have concealable tips and a pocket clip for convenient pocket storage. To use, simply slide the cuff back to expose the tip and shaft. Flip the barrel to the long-side shaft to extend your reach. These drivers are designed for precision work.