Proto J9900C Combination Screwdriver Set 36 Piece

Product Description

The PROTO J9900C is a 36-piece combination screwdriver set from the Classic Series, designed for professional tradespeople who need a reliable, full-coverage hand tool kit on the job. The set includes Phillips, slotted, and Torx drivers, covering the most common fastener types encountered in HVAC, electrical, plumbing, and general mechanical work. Handles are 4-sided and ergonomic, manufactured from acetate over a round or square alloy steel shank. Finish is polished chrome on the shank with black oxide tips. The set meets ASME B107.15 standards for screwdriver performance and quality.

The J9900C is suited for residential and commercial service work where a technician needs multiple driver types and sizes available in a single organized set. The combination of Phillips, slotted, and Torx coverage makes it practical for panel work, equipment installation, and general mechanical service. The imperial measurement system and ASME B107.15 compliance make it appropriate for standard North American trade applications. Licensed HVAC technicians, electricians, and plumbers will find the range of included types useful for day-to-day service calls and installations.

Key Features

• 36-piece set covering Phillips, slotted, and Torx driver types
• 4-sided ergonomic acetate handles for grip and torque control
• Alloy steel shanks in round and square configurations
• Polished chrome finish with black oxide tipped shanks
• Meets ASME B107.15 screwdriver performance standard
• Imperial measurement system - fits North American trade use

Compatibility

Designed as a general-purpose combination screwdriver set for professional trade use across HVAC, electrical, plumbing, and mechanical service applications.

Installation Notes

Always de-energize electrical panels and equipment before using screwdrivers on live enclosures or terminal connections. Select the correct driver tip size and type for each fastener to avoid cam-out or fastener damage. Inspect driver tips for wear before use on precision or torque-sensitive fasteners. These tools are intended for hand use only - do not use with impact drivers or power tools.