The 14-In-1 HVAC Driver Blue/Blue includes the HVAC industry Schrader valve double bit as well as the 12 most popular screwdriver tips for all heating, ventilation and air conditioning work. Included are the Square Awl Reamer bit and the DoubleLok Phillips #2 combo bit, which can be used in any 1/4-Inch quick change chuck. The shaft opening serves hex driver for the popular 1/4-Inch hex sheet metal screws. The shaft is made with alloy steel, while the handle is made from engineered nylon Triax resin. The EZ Guide collar helps maintain full contact between the bit and the screw for easier screw driving. The patented pullout bit cartridge makes it easy to find, change and store bits, while the Palm Saver Cap does not turn as you push on the cap and turn the handle to drive screws. This professional quality driver is made in Canada.