Eliminate the frustration of stripped screws and snapped bits with the HARDEN 550601 9-Piece S2 Steel Bit Set. While standard bits often fail under high torque, these professional-grade inserts are forged from premium S2 Shock-Resisting Tool Steel, offering a superior balance of hardness and elasticity that extends the life of the tool by up to 5x.

Each bit features a universal 1/4-inch (6.35mm) hex shank, making them perfectly compatible with all standard magnetic bit holders, manual drivers, and power drills. The precision-ground tips ensure a "lock-in" fit that reduces cam-out (slipping), protecting both the bit and your expensive fasteners. Finished with a sandblasted anti-rust coating, these bits are built to withstand the humid and greasy environments of professional workshops and construction sites.

Key Features & Benefits:

• Premium S2 Alloy Steel: Industrial-grade material provides exceptional impact resistance and professional-tier hardness (HRC 58-62).

• High-Precision Tip Geometry: Precision-milled to meet exact international standards, ensuring a snug fit and preventing screw head damage.

• Universal 1/4" Hex Shank: Optimized for use in impact drivers, cordless drills, and magnetic screwdriver handles.

• Satin Sandblasted Finish: Provides a high-friction surface for better grip and superior resistance to corrosion and wear.

• 9-Piece Essential Range: Includes the most frequently used Slotted, Phillips, and Pozi bits for universal maintenance.

• Impact Ready: Engineered to handle the high-torque peaks of modern cordless impact drivers.

Technical Specifications:

• Model Number: 550601

• Material: Forged S2 Alloy Steel

• Shank Size: 1/4" (6.35mm) Hex

• Bit Length: 25mm (Standard Insert)

• Hardness: HRC 58–62

Set Includes (Common Configuration):

• Slotted: 3mm, 4mm, 5mm, 6mm

• Phillips: PH1, PH2, PH3

• Pozi: PZ1, PZ2

Ideal For:

• Furniture Assembly: High-speed driving into hardwoods and composite materials.

• Automotive Interior Work: Accessing small fasteners in dashboards and door panels.

• Electrical Maintenance: Tightening terminal screws and mounting hardware.

• Construction & DIY: A reliable, high-strength set for everyday fastening tasks.

We don't send anything by standard post, all of our deliveries are by trusted couriers which are fully traceable to ensure your orders arrive safe and on time.

Delivery Prices & Transit Times

Delivery costs can be found at checkout.

Delivery Cut-Off

For same day dispatch orders, orders should place by 2 p.m, Monday – Friday, for next working day delivery on selected products. Orders placed after 2 p.m. will be shipped on the next working day.

If you have an urgent order or need a last-minute shipment, please reach out to our Sales Team—there may still be a chance to get it dispatched today!

Note that certain items may have a lead time, so the estimated delivery times apply only once the order has been shipped. Product descriptions will clearly indicate if a lead time is required.

For further inquiries, Call our sales team now on 033-50325252.