Klein 33806 43-piece ProFlex impact set inside an open MODbox case showing 10 SAE sockets, 3/8-inch ratchet, magnetic handle, and 29 driver bits.
Diagram detailing included items in the Klein 33806 kit, featuring 10 SAE sockets, 3/8-inch wrench, magnetic driver, adapter, and 29 S2 steel bits.
Diagram of the Klein Cushion-Grip screwdriver handle highlighting the magnetizing bit holder securing a small metal screw during manual driving.
Diagram displaying four adjustable blade lengths for the Klein magnetic screwdriver shank to access fasteners at varying clearance depths.
Power impact driver fitted with a Klein S2 steel ProFlex torsion bit designed to absorb high torque spikes for extended bit service life.
Diagram summarizing bit profiles and socket dimensions in the Klein 33806 kit, including SAE sockets, TORX, slotted, Phillips, square, and hex tips.
Klein MODbox modular bit cases stacked together, illustrating how the clear lids open independently without removing the top case.
The Name on the Tools is Our Reputation promotional video
Klein 33806 43-piece ProFlex impact set inside an open MODbox case showing 10 SAE sockets, 3/8-inch ratchet, magnetic handle, and 29 driver bits.
Diagram detailing included items in the Klein 33806 kit, featuring 10 SAE sockets, 3/8-inch wrench, magnetic driver, adapter, and 29 S2 steel bits.
Diagram of the Klein Cushion-Grip screwdriver handle highlighting the magnetizing bit holder securing a small metal screw during manual driving.
Diagram displaying four adjustable blade lengths for the Klein magnetic screwdriver shank to access fasteners at varying clearance depths.
Power impact driver fitted with a Klein S2 steel ProFlex torsion bit designed to absorb high torque spikes for extended bit service life.
Diagram summarizing bit profiles and socket dimensions in the Klein 33806 kit, including SAE sockets, TORX, slotted, Phillips, square, and hex tips.
Klein MODbox modular bit cases stacked together, illustrating how the clear lids open independently without removing the top case.
The Name on the Tools is Our Reputation promotional video
KLEIN TOOLS

Klein Tools Impact Driver Bit Socket Set 33806 ProFlex 43 Piece SAE (S2 Steel Torsion Bits 3/8 In Wrench Cushion Grip Handle MODbox Case Kit)

Only 2 left
SKU: 33806
$79.99 USD

Description

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Klein Tools 33806 ProFlex 43-Piece SAE Impact Driver Bit and Socket Set

The Klein Tools 33806 ProFlex 43-Piece Impact Bit and Socket Set functions as a heavy-duty mechanical driving system engineered to install high-torque threaded fasteners across commercial electrical, mechanical, and structural framing projects. Weighing 3.3 lbs and organized in a MODbox-compatible modular storage case measuring 9-1/4 in. L x 5-1/2 in. W x 1-3/4 in. H, this kit includes 29 impact-rated S2 tool steel driver bits with energy-absorbing ProFlex torsion zones, 10 SAE sockets, a 3/8-inch drive socket wrench, and a magnetic Cushion-Grip screwdriver handle with a quick-adjust push button. Constructed with precision-machined bit geometry, this multi-drive set allows electricians, HVAC technicians, and steel erectors to switch seamlessly between hand driving, 3/8 in. ratchet leverage, and 1/4 in. quick-connect power impact drivers without stripping screw heads.

Best Used For:

  • High-Torque Power Fastening: Driving heavy-duty lag screws, self-tapping sheet metal fasteners, and structural bolts with cordless power impact drivers.
  • Commercial Electrical & HVAC Assembly: Installing electrical panel hardware, junction box grounding screws, and ductwork framing using magnetic hand or power drivers.
  • Portable Modular Tool Organization: Transporting a full 43-piece multi-drive fastening kit securely inside Klein MODbox stackable jobsite tool storage systems.

Key Performance & Safety Features

  • ProFlex Energy-Absorbing Torsion Zone: Specialized S2 steel bit shank geometry flexes under extreme rotational torque spikes to extend overall bit life and reduce tip fracture.
  • High-Strength S2 Tool Steel Construction: Impact-rated alloy metallurgy resists shearing, bending, and stripping under continuous impact wrench loads.
  • Dual-Drive Cushion-Grip Handle: Ergonomic rubberized driver handle includes a magnetic bit barrel and push-button release for rapid manual fastener driving.
  • 3/8-Inch Drive Socket Wrench Included: Compact ratchet handle provides direct lever torque for tight clearance manual nut and bolt fastening.
  • Universal 1/4-Inch Quick-Connect Compatibility: Screwdriver shaft and included 3/8 in. square impact adapter fit standard 1/4 in. power driver chucks.
  • MODbox Compatible Modular Storage Case: Hard-shell impact-resistant carrying case features steel hinges, a stay-shut latch, and modular stackability.

What's Included

  • (4) Phillips Bits (#0, #1, #2, #3)
  • (3) Slotted Bits (3/16 in., 1/4 in., 5/16 in.)
  • (3) Square Bits (#1, #2, #3)
  • (10) Hex Bits (3/32 in., 1/8 in., 5/32 in., 3/16 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, 13/64 in. / 5 mm)
  • (2) Combo Bits (C1, C2)
  • (7) TORX® Bits (T10, T15, T20, T25, T27, T30, T40)
  • (10) SAE Impact Sockets
  • (1) 3/8 in. Square Drive Impact Adapter
  • (1) 3/8 in. Drive Socket Wrench
  • (1) Magnetic Cushion-Grip Screwdriver Handle
  • (1) Quick-Connect Bit Extension Shaft
  • (1) MODbox™ Compatible Stackable Case

Technical Specifications

Brand Manufacturer Klein Tools®
Model Part Number OEM SKU 33806
Tool Kit Classification Type 43-Piece ProFlex Impact Driver Bit and SAE Socket Set
System Compatibility Platform 1/4 in. Impact Drivers, 3/8 in. Ratchets & MODbox™ System
Core Driver Bit Metallurgy Impact-Rated High-Strength S2 Tool Steel
Bit Shank Stress Resistance ProFlex Energy-Absorbing Torsion Zone Technology
Primary Drive Anvil Sizes 1/4 in. Hex Shank and 3/8 in. Square Drive Wrench
Included Phillips Tip Sizes #0, #1, #2, #3
Included Slotted Tip Sizes 3/16 in., 1/4 in., 5/16 in.
Included Square Tip Sizes #1, #2, #3
Included Hex Tip Sizes 3/32 in., 1/8 in., 5/32 in., 3/16 in., 1/4 in. (SAE & Converted Metric)
Included TORX® Tip Sizes T10, T15, T20, T25, T27, T30, T40
Included Specialty Combination Tips C1, C2 Combo Bits
Fastener Magnetization Yes (Magnetic Screwdriver Barrel & Bit Retention)
High-Voltage Insulated Frame No (Uninsulated - do not use on energized electrical circuits)
Total Kit Piece Count 43 Pieces
Modular Carrying Case Dimensions 9-1/4 in. L x 5-1/2 in. W x 1-3/4 in. H (23.5 x 14.0 x 4.4 cm)
Assembled Net Package Weight 3.3 lbs. (1.5 kg)
Global Trade Item Number GTIN 00092644338069

Pro-Tip: When driving self-drilling framing screws into heavy structural steel, use the ProFlex torsion bits directly with high-torque 1/4 in. impact drivers. The built-in energy-absorption zone flexes during sudden rotational resistance spikes, protecting the precision-ground bit tip from snapping under peak torque loads.