Hex Key Set FISCHER Dreiarm 85513 – Hardened Steel T-handle 4/5/6 mm

FISCHER Dreiarm 85513 is a hardened steel T-handle hex key set that contains three fixed sizes: 4 mm, 5 mm and 6 mm. The three-arm layout places the three hex keys around a central handle, allowing quick selection of the required size while keeping the set compact. The T-handle provides improved torque transfer and a comfortable grip for assembly, maintenance and repair work on machinery, furniture and bicycles.

Advantages

The hardened steel construction increases wear resistance and maintains tip geometry for reliable engagement with hex fasteners. The T-handle design delivers better leverage compared with straight L-keys, enabling controlled tightening and loosening. The compact three-arm format reduces the risk of losing individual keys and speeds up size selection in workshop and field scenarios.

Suitable for

• Assembly and disassembly of furniture and fixtures
• Routine maintenance of bicycles and small machinery
• Light to medium workshop repair tasks requiring 4 mm, 5 mm or 6 mm hex keys
• Field service where a compact, quick-access tool is required

Key specifications

• Tool type: Three-arm T-handle hex key set
• Material: Hardened steel for increased durability
• Included sizes: 4 mm, 5 mm, 6 mm
• Handle style: Central T-handle for improved torque and grip
• Layout: Compact three-arm design for quick size selection

How to use

Select the required hex size by rotating the three-arm handle so the appropriate key is aligned for access. Insert the hex tip fully into the fastener head to ensure proper engagement, then apply steady torque using the T-handle. For loosening, turn counterclockwise; for tightening, turn clockwise. Retract the key and rotate the arm back into the compact position for storage when finished.

Usage recommendations

Use the FISCHER Dreiarm T-handle hex key set on clean fasteners and avoid excessive impact or bending loads. For critical torque requirements, verify torque values with a calibrated torque tool. Store the set in a dry place to minimize corrosion and periodically inspect tips for wear to ensure continued secure engagement with hex fasteners.