This 8-in-1 HVAC Slide Drive™ Screwdriver / Nut Driver has a unique, patented head that slides back and forth to switch from 1/4-Inch to 5/16-Inch magnetic hex-head screwdriver. Convenient thumb nut locks tip setting. It includes a specialty bit for the installation/removal of common TR-4 Schrader® valves as well as regular 1/4-Inch and 3/8-Inch nut drivers plus Phillips/slotted double-ended bits. Offers the HVAC tech the convenience of having magnetic nut drivers on a multi-bit screwdriver.Features U.S. patent 7,654,175 B2 Great for HVAC applications including thermostat installation and control work Cushion-Grip™ handle for greater torque and comfort Features a specialty bit for installation/removal of common TR-4 Schrader® valves Includes 1/4-Inch and 3/8-Inch hollow nut drivers, as well as #2 Phillips, 1/8-Inch (3 mm) and 1/4-Inch (6 mm) slotted screwdriver tips Thumb nut locks tip setting Slide Drive™ 8-in-1 Screwdriver / Nut Driver with unique, patented head that slides back and forth to switch from 1/4-Inch to 5/16-Inch magnetic hex-head screwdriver Warnings Never use on or near live electrical circuits. Always wear approved eye protection. Do NOT use to pry or chisel. Nut Driver Sizes: 1/4 in Magnetic, 5/16 in Magnetic, 1/4 in, 3/8 in Screwdriver Tips: #2 Phillips, 1/8 in (3.2 mm) slotted, 1/4 in (6.4 mm) slotted Specialty Bit: TR-4 Schraderae valve core removal Handle Type: Cushion-Grip Handle Length: 4.313 in (11 cm) Overall Length: 7.5 in (19.1 cm) Overall Width: 1.25 in (3.2 cm) Overall Height: 1.25 in (3.2 cm) Weight: 0.5 lbs Shank Length: 3.25 in (8.3 cm) Width: 1.25 in Height: 1.25 in Magnetic: Yes Application: HVAC Tip Lock: Thumb nut locks tip setting Patented: U.S. Patent 7,654,175 B2 Hex Sizes: 1/4 in, 5/16 in DownloadsVideo DownloadSpec Sheet