Klein Tools 32527 11-in-1 Screwdriver Nut Driver Set

Product Description

The KLEIN TOOLS 32527 is an 11-in-1 multi-bit screwdriver and nut driver designed for trade professionals who need a single compact tool to handle a wide variety of fastener types on the job. The standout feature is a unique bit for installation and removal of TR-4 Schrader valves, making it especially useful for HVAC and refrigeration technicians who regularly service valve cores in the field. The tool covers slotted, Phillips, square-drive, nut driver, and Schrader valve applications in one handle, reducing the number of individual tools a tech needs to carry. At 0.5 pounds, it is lightweight enough for an apron or tool belt without adding bulk.

This tool is suited for residential and light commercial HVAC service, plumbing rough-in and trim, and electrical work where multiple fastener drives are encountered. The TR-4 Schrader valve bit makes it a natural fit for refrigeration and HVAC technicians charging or recovering refrigerant, replacing valve cores, or servicing access fittings. Electricians and plumbers will find the nut driver and screwdriver bits useful for panel work, fixture installation, and fixture trim. It is sold as an individual unit.

Key Features

• Unique TR-4 Schrader valve bit for valve core installation and removal without a separate core tool
• Slotted drive sizes: 3/16 inches and 1/4 inches
• Phillips drive sizes: No. 1 and No. 2
• Square drive sizes: No. 1 and No. 2
• Nut driver sizes: 1/4 inches, 5/16 inches, and 3/8 inches
• Lightweight at 0.5 pounds for all-day carry on a tool belt

Compatibility

Designed for general trade use across HVAC, refrigeration, plumbing, and electrical applications where standard slotted, Phillips, square-drive, nut driver, and TR-4 Schrader valve fasteners are encountered.

Installation Notes

This tool is used by HVAC technicians, plumbers, and electricians for general service and installation tasks. When servicing Schrader valve cores on refrigerant lines or access fittings, recover or isolate refrigerant per EPA Section 608 requirements before depressing or removing any valve core. Ensure power is off and circuits are de-energized before using any screwdriver or nut driver bit on electrical panels or components. Keep bit tips clean and free of debris to maintain proper drive engagement and prevent fastener damage.

Technical Specifications

• Drive Types Included: Slotted, Phillips, Square, Nut Driver, TR-4 Schrader Valve
• Slotted Sizes: 3/16 inches, 1/4 inches
• Phillips Sizes: No. 1, No. 2
• Square Drive Sizes: No. 1, No. 2
• Nut Driver Sizes: 1/4 inches, 5/16 inches, 3/8 inches
• Total Functions: 11
• Weight: 0.5 pounds
• Unit of Measure: Each

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: 32527