Hex L‑key Allen wrench 4 mm Beta Tools model 96N-4

The Hex L-key Allen wrench 4 mm Beta Tools model 96N-4 is a single-piece L-shaped hex key designed for driving 4 mm hex fasteners. Constructed for practical use in assembly, maintenance and repair, the tool provides a compact form factor that combines torque leverage with access to recessed or narrow screw heads. Its solid construction ensures consistent engagement with hex sockets and reliable performance in repeated operations.

Advantages

The L-shaped geometry offers a balance between reach and leverage, allowing both high-torque applications and maneuvering in confined spaces. Being a one-piece tool reduces the risk of joint failure and simplifies handling during use. The 4 mm size matches standard metric hex fasteners commonly found in mechanical devices, bicycles and furniture, ensuring compatibility across a wide range of tasks.

Suitable for

• Assembly and disassembly of mechanical components
• Bicycle maintenance and adjustments
• Furniture fitting and tightening of hex bolts
• Light industrial and workshop repair tasks

Key specifications

• Tool type: L-shaped hex (Allen) wrench
• Size: 4 mm hex drive
• Construction: solid single-piece design
• Primary use: driving metric hex fasteners
• Form factor: short arm and long arm for leverage and access

How to use

Insert the short or long arm of the 4 mm hex key into the hex socket of the fastener depending on required reach and torque. Use the long arm for increased leverage when loosening or tightening; use the short arm for access to recessed screws or when space is limited. Apply steady, even force to avoid stripping the fastener head and ensure the tool is fully seated in the socket before turning.

Usage recommendations

For best results, keep the hex key clean and free of debris, and avoid excessive force that could round the fastener. Select the arm length that provides adequate clearance and torque for the task. Store the tool in a toolbox or on a holder to prevent damage and maintain tip integrity.