Klein Tools Impact Screwdriver Bit Socket Set 33805 ProFlex 38 Piece (S2 Steel Torsion Bits Adjustable Cushion Grip Handle MODbox Case Kit)

Klein Tools 33805 ProFlex 38-Piece S2 Steel Impact Screwdriver Bit and Socket Set

The Klein Tools 33805 ProFlex 38-Piece Impact Screwdriver Bit and Socket Set operates as a high-density, multi-drive fastener installation kit engineered to secure threaded screws and hex nuts across commercial electrical panels, machinery enclosures, and structural framing. Stored within a MODbox-compatible clear-lid storage case measuring 7 inches long by 3.75 inches wide by 1.75 inches high and weighing 1.56 lbs, this kit incorporates 29 impact-rated S2 tool steel bits with energy-absorbing ProFlex torsion zones, 6 magnetic nut driver sockets, a 3/8 inch square impact adapter, and a telescoping Cushion-Grip screwdriver handle with a quick-adjust push button. Constructed to absorb severe rotational shock loads, this system allows electricians and technicians to alternate seamlessly between high-torque 1/4 inch power impact drivers and precise manual hand driving without stripping screw heads or snapping bit shanks.

Best Used For:

• High-Torque Power Fastening: Driving self-tapping sheet metal screws, lag bolts, and structural electrical panel hardware using 1/4 inch power impact drivers.
• Precision Manual Depth Reach: Utilizing the push-button telescoping Cushion-Grip handle to access recessed grounding screws inside control boxes and deep equipment bays.
• Hex Nut & Socket Assembly: Running 1/4 inch through 9/16 inch hex nuts or adapting to 3/8 inch square drive sockets with minimal-chamfer internal walls for max grip.

Key Performance & Safety Features

• ProFlex Energy-Absorbing Torsion Zone: Specialized S2 steel bit shank geometry flexes under peak rotational impact torque to extend overall bit service life.
• S2 Impact-Rated Tool Steel: Heat-treated alloy steel formulation resists tip rounded wear, torsional twisting, and snapping under continuous power driving.
• Telescoping Cushion-Grip Screwdriver: Ergonomic rubberized driver handle includes a quick-adjust push button and an internal magnet for rapid manual bit positioning.
• Minimal Chamfer Hex Nut Sockets: 6 nut driver sockets feature reduced internal hex chamfering to maximize surface area contact on thin-head sheet metal fasteners.
• MODbox Compatible Clear-Lid Organizer Case: Heavy-duty impact-resistant storage box with steel hinge pins, a stay-shut front latch, clear lid, and embedded small parts tray.

What's Included

• (4) Phillips Bits (#0, #1, #2, #3)
• (3) Slotted Bits (3/16 inch, 1/4 inch, 5/16 inch)
• (3) Square Bits (#1, #2, #3)
• (10) Hex Bits (3/32 inch, 1/8 inch, 5/32 inch, 3/16 inch, 1/4 inch, 5/64 inch / 2 mm, 3/32 inch / 2.5 mm, 1/8 inch / 3 mm, 5/32 inch / 4 mm, 13/64 inch / 5 mm)
• (2) Combo Bits (C1, C2)
• (7) TORX® Bits (T10, T15, T20, T25, T27, T30, T40)
• (6) Magnetic Nut Driver Sockets (1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch)
• (1) 3/8 Inch Square Drive Impact Adapter
• (1) Adjustable-Length Magnetic Cushion-Grip Screwdriver Handle
• (1) MODbox™ Compatible Storage Case with Small Parts Tray

Technical Specifications

Pro-Tip: When installing shallow sheet metal hex screws on HVAC ducting, snap the corresponding nut driver socket directly onto your 1/4 inch power impact driver. The minimal internal chamfer maximizes sidewall engagement against thin fastener heads, preventing slip-off and rounding under continuous torque.