Klein Tools Impact Screwdriver Bit Set 33803 ProFlex 44 Piece (S2 Steel Torsion Bits Cushion Grip Adjustable Handle MODbox Case Power Driving Kit)

Klein Tools 33803 ProFlex 44-Piece Impact Screwdriver Bit Set

The Klein Tools 33803 ProFlex 44-Piece Impact Screwdriver Bit Set operates as a high-density, multi-geometry fastener driving system engineered to install and remove specialized screws across commercial electrical panels, machinery housings, and building frames. Weighing 1.27 lbs and stored inside a MODbox-compatible organizer case measuring 7.0 in. L x 3.75 in. W x 1.75 in. H, this comprehensive kit features 42 impact-rated S2 tool steel driver bits with energy-absorbing ProFlex torsion zones, a 1/4 in. quick-connect bit holder, and an adjustable Cushion-Grip screwdriver handle with an internal magnet and quick-adjust push button. Constructed to withstand sudden rotational torque spikes, this set enables electricians and field technicians to alternate smoothly between high-torque 1/4 in. power impact drivers and precise manual hand driving without fracturing bit tips or rounding fastener heads.

Best Used For:

• High-Torque Power Impact Driving: Driving self-tapping metal screws, cabinet mounting hardware, and long wood fasteners using 1/4 in. cordless impact drivers.
• Precision Manual Control Fastening: Utilizing the push-button telescoping Cushion-Grip handle to reach recessed terminal screws inside electrical panels and HVAC control boards.
• Organized Modular Jobsite Transport: Storing and securing 42 precision driver bits and small loose hardware within Klein MODbox stackable storage systems.

Key Performance & Safety Features

• ProFlex Energy-Absorbing Torsion Zone: Specialized S2 steel bit shank geometry flexes under peak rotational impact forces to extend tool life and prevent tip shearing.
• Impact-Rated S2 Tool Steel: High-impact alloy steel construction provides maximum wear resistance and tip integrity during heavy power driver usage.
• Telescoping Cushion-Grip Screwdriver: Ergonomic rubberized driver handle features an adjustable-length shaft and a push button for rapid manual depth configuration.
• Powerful Magnetic Fastener Retention: Integrated magnetic barrel holds bits tightly in place while magnetizing screw heads for one-handed starting.
• MODbox Stackable Storage System: Rugged, impact-resistant carrying case includes steel hinge pins, a stay-shut latch, and built-in small parts trays.

What's Included

• (4) Phillips Bits (#0, #1, #2, #3)
• (4) Slotted Bits (5/32 in., 3/16 in., 1/4 in., 5/16 in.)
• (3) Square Bits (#1, #2, #3)
• (14) Hex Bits (3/32 in., 7/64 in., 1/8 in., 9/64 in., 5/32 in., 3/16 in., 7/32 in., 1/4 in., 5/64 in. / 2 mm, 3/32 in. / 2.5 mm, 1/8 in. / 3 mm, 5/32 in. / 4 mm, 11/64 in. / 4.5 mm, 13/64 in. / 5 mm)
• (2) Combo Bits (C1, C2)
• (11) TORX® Bits (T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40)
• (1) Adjustable-Length Magnetic Cushion-Grip Screwdriver Handle
• (1) 1/4-Inch Quick-Connect Extension Shaft
• (1) MODbox™ Compatible Storage Case with Small Parts Tray

Technical Specifications

Pro-Tip: When working inside deep electrical panel enclosures, press the quick-adjust button on the driver handle to extend the telescoping shaft outward. The powerful magnetic barrel holds long terminal screws securely onto C1 or C2 combo bit tips, allowing precise one-handed alignment without dropping hardware into live bus bars.