Description Set of impact sockets-bits SPLINE 1/2" (9 pcs.) QUATROS QS50010

QUICKSTER PROFESSIONAL

SPLINE 1/2" Impact Bit Set, 9 pcs. M4–M16

for hard-to-reach fasteners

Professional set of 78 mm long bits made of chrome-molybdenum steel for impact use.

Article: QS50010

Functional Purpose

Set of long SPLINE (XZN) impact bits for working with hard-to-reach fasteners where conventional bits cannot reach.

Package Contents

9 bits: M4, M5, M6, M8, M9, M10, M12, M14, M16. Length 78 mm, 1/2" drive. Supplied in a case.

Impact Quality

Made of chrome-molybdenum steel (CrMo) with a black phosphate coating for corrosion protection.

Description QS50010

The SPLINE Impact Bit Set QS50010 is a professional tool for workshops working with 12-point XZN fasteners on European cars. This set contains 9 bits in sizes from M4 to M16, each 78 mm long, with a 1/2" drive. Made of chrome-molybdenum steel with a black phosphate coating.

The use of short bits in combination with extensions often leads to skewing, stripping, and damage to the fastener. The QS50010 completely solves this problem: the 78 mm length allows you to reach recessed bolts without extensions, chrome-molybdenum steel withstands impact loads, and the black phosphate coating protects against corrosion. The set is supplied in a convenient case.

Technical Specifications

⚠️ Important: Bits are designed for impact use. Make sure the bolt profile matches SPLINE (XZN) before use.

Set Contents

When to Use This Set

• For working with 12-point SPLINE (XZN) bolts on European cars.
• When servicing VAG, Mercedes-Benz, BMW engines where XZN bolts are used.
• For accessing recessed fasteners thanks to the 78 mm length.
• With impact wrench for quick assembly/disassembly.
• For use on cylinder head bolts, flywheel mounts, and other critical connections.

QS50010 Benefits

Impact Quality

Chrome-molybdenum (CrMo) steel provides strength and durability when used with impact tools.

Long 78mm Bits

Extended length allows you to reach recessed fasteners without extensions.

Anti-Corrosion Coating

Black phosphate coating protects the bits from corrosion and extends their service life.

Frequently Asked Questions

Are these bits suitable for VAG engines?

Yes, the set includes all common SPLINE (XZN) sizes used on VAG, Mercedes-Benz, and BMW engines.

Can they be used with an impact wrench?

Yes, the bits are made of chrome-molybdenum (CrMo) steel specifically for impact use.

How is SPLINE different from TORX?

SPLINE (XZN) has 12 faces, while TORX has 6. They are not interchangeable. Using the wrong profile will damage the bolt.

What is the warranty on the QS50010 set?

The tool is guaranteed for 12 months against manufacturing defects under professional use.