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10 Piece Triple-Square Bit Set
NUMBER 10054A-SET
10pc Long Spline XZN Socket Bit Set.
XZN means TRIPLE SQUARE
Chrome-plated chrome vanadium steel sockets with S2 alloy steel bits. Length: 4" Precision-milled XZN Triple Square 12-point spline bits fit European and Asian cars. 1/4" Drive: 4mm, 5mm, 6mm
3/8" Drive: 8mm, 9mm, 10mm, 12mm, 14mm (tamper-proof)
1/2" Drive: 16mm (tamper-proof), 18mm (tamper-proof)
Set 6 Piece Short Pattern XZN
NUMBER XZN-V4126
Set 6 Piece Short Pattern Set
Includes sizes 4mm, 5mm, 6mm, 8mm, 10mm, and 12mm.
Features a compact, one-piece stubby design for access in tight spaces.
Made from S2 steel and fully heat-treated for durability.
Satin chrome plated and impact quality
These are commonly used for high-torque fasteners on European vehicles (especially Volkswagen, Audi, Porsche, Mercedes, and BMW), such as:
CV joint bolts Cylinder head bolts
Transmission components Flywheel bolts
Set 8 Piece Short Pattern XZN
NUMBER XZN1008PC
XZN "Stubby" Short Pattern Sockets
8 Piece XZN Set 3/8 Drive.
This is our best selling set!
Sizes 4M, 5M, 6M, 8M, 10M, 12M, 14M, 16M
Short pattern sockets.
Each tool is 1-1/2" long.
Sturdy, compact, One Piece design.
Satin Chrome with black impact tip. Fully Heat Treated
S2 Alloy Steel -Some of the strongest drivers available!
Comes in a plastic blow-mold case.
10 Piece Impact Quality XZN Set
NUMBER IMPACT-XZN6
Impact Drive Set Half Cut XZN Stubby 10-Pc With Case
10 Piece XZN Set in plastic case.
Impact Quality
Approved for Hand and Power Tools
S2 Fully Heat Treated and Gun Metal Gray Plating
1/2 Cut High Torque Impact Drivers
Includes: Impact XZN04 through XZN18, and 3/8" - 1/2" Sq. Drive Adapter
Carrying case with tray for hand held impact driver, extensions, or accessories
4-piece Triple square Bit set
NUMBER W13955
4-piece Metric triple square Bit set.
These are special xzn bits designed for triple square (also known as XZN or Triple Square).
Sizes: 6mm, 8mm, 10mm, and 12mm
These bits are frequently required for certain European vehicles (especially Volkswagen, Audi, Porsche, BMW, and Mercedes), where triple square bolts appear on:Cylinder head bolts, Disc brake caliper bolts, Axle shafts, some Flywheel bolts and other high-torque applications. These provide better torque transfer and resistance to cam-out than standard hex or torx.
11 Piece XZN Set in Metal carry Case
MK-XZN11PCM
11 Piece XZN Triple-Square Set
In metal carry case
These tools are XZN style.
You get five long and five short bits plus holder.
Both Long and short sizes include M5, M6, M8,M10 and M12.
Picture is for reference only.
Note these are not torx tools. They are XZN.
Each LONG bit is 3 inches.
Each SHORT bit is 1.2 inches long.
Comes in a metal storage case.
9 Piece Low Profile Set
XZN8560
9 Piece Low Profile XZN Socket Set
Low Profile Impact Quality Triple Square Tools
Made of drop forged, heat treated chrome molybdenum steel with a corrosion-resistant black phosphate finish Includes:
1/4"Dr. sizes: M4, M5, M6, M8;
3/8"Dr. sizes: M10, M12, M14 ( M14 tamperproof);
1/2"Dr.sizes: M16, M18 M16 and M18 tamperproof).
Meets or exceeds ANSI performance standards.
HEAVY DUTY XZN L-KEY M18.
NUMBER MML-M18
HEAVY DUTY XZN L-KEY M18.
This is a high quality tool Made in Germany
RARE JUMBO SIZE M18 (18mm)
A handy tool for working on VW, Audi, and Porsche vehicles.
Volkswagen, Audi and Porsche cars all use XZN bits and sockets for a variety of applications. Triple square sockets can be difficult to come by at most auto parts stores and nothing will ruin your day quicker than having to drive around town trying to find this size. This sale is for size M18 only.
Item 10XZN-CPST
10 Piece XZN Bit Socket Set
Note drive sizes:
1/4” Drive: M4, M5, M6
3/8” Drive: M8, M9, M10, M12, M14
1/2” Drive: M16, M18.
Ideal for working on European vehicles
Comes in a plastic storage case.
XZN8560
7 Piece Super Stubby Dual Drive XZN Bit Set
7 Piece set with combination 1/4” square drive and 1/2” hex drive to work in the tightest spaces.
These bits are only 19mm long!
Pro Tip: for a better "bite" apply a small amount of Valve Lapping Compound to the bit end before placing on the fastener.
- Sizes: 4, 5, 6, 8, 10, 12 and 14mm
- Special titanium-nitrate coating for enhanced durability
- Comes on a rail
XZN6034DR
Heavy Duty Torx and XZN Set
3/4 Drive Torx and XZN Sockets
Torx sizes: T70, T80, T90, T100
XZN sizes: M16, M18 all Tamper Proof (with hole in the tip)
Chrome Molybdenum
Color of Case may vary Blue / Red / Black
Standard Length XZN Set
NUMBER MK-33230
4 Piece Heavy Duty 1/2" Drive XZN
Standard Length Socket Set
LENGTH 2 1/8
Sizes included: M6, M8, M10, M12.
Set comes as shown.
Quality Ampro XZN Tools
XZN TOOLS
Why is it called XZN?
Is XZN the same as a spline drive?
What are triple square used for?
XZN (also called triple square) refers to a specific type of 12-point drive system commonly used on European vehicles (e.g., Volkswagen, Audi, BMW, Mercedes, Porsche) for high-torque applications like cylinder head bolts, CV joints, and drive-train components. However, not all 12-point styles are the same—there are distinct variations in the design of 12-point fasteners and tools, even though they all have 12 engagement points. The key differences lie in the angle of the points and the overall profile:
1. Standard 12-Point (Double Hex or Bi-Hex) This is the most common 12-point style found in many tool sets. It features a double-hexagon shape with 120-degree angles on the points (similar to a 6-pt hex but doubled for more engagement positions).
Used primarily for 12-point bolt heads (common in aerospace, automotive performance parts like ARP bolts, or some engine applications) or as a alternative to 6-point sockets on hex bolts.
Advantages: Easier to align in tight spaces (only needs 30-degree rotation to engage), can fit hex (6-point) bolts, square bolts in a pinch, or true 12-point external bolt heads.Not interchangeable with XZN in high-torque scenarios without risk of slipping or damage.
2. XZN (Triple Square)
A 12-pt internal drive (usually male bits for female fastener recesses).
Features 90-degree angles on the points, created by overlaying three squares (hence "triple square").
Designed for very high torque without stripping, common in German/European cars. Not the same as standard 12-point—a regular 12-point socket or bit will often fit loosely or slip on XZN fasteners, and vice versa can damage the tool or bolt.
3. Spline Drive (12-Spline Flange or Multi-Spline)Another 12-point-like system, but with more rounded or splined teeth (often many more than 12, but some variants are called 12-point spline).
Distinct from both above; has a different tooth profile (more like fine splines on a shaft). Used in some automotive or industrial applications for even torque distribution.
