Allen key set BAHCO 1-141-90-303 — metric 12-piece set, durable steel

Set of 12 metric Allen keys BAHCO 1-141-90-303 — metric 12-piece set, durable steel is a compact collection of hex keys manufactured from durable steel for a range of metric hex sizes. The set covers common metric sizes used for assembly, maintenance and repairs in workshops, homes and professional environments. Designed to provide reliable torque transfer and consistent fit in hex fasteners, this BAHCO set is suitable for routine tasks such as furniture assembly, bicycle adjustments and machinery service.

Advantages

The keys are made from durable steel that resists wear and maintains precise tip geometry for repeated use. A full range of 12 metric sizes ensures compatibility with most metric hex fasteners encountered in general repair and assembly work. The compact set is easy to store and transport, allowing users to keep the required size close at hand. Consistent manufacturing tolerances reduce slippage and rounding of fastener heads during application of torque.

Suitable for

• Furniture assembly and disassembly
• Bicycle maintenance and component adjustment
• Routine machinery service and workshop repairs
• Home DIY projects involving metric hex fasteners
• Electrical enclosures and small appliance servicing

Key specifications

• Number of pieces: 12 (metric sizes)
• Material: durable steel
• Type: L-shaped hex (Allen) keys
• Finish: corrosion-resistant surface treatment (factory-applied)
• Form factor: compact set for storage and transport

How to use

Select the key that matches the hex size of the fastener, insert the short or long arm into the head depending on required reach and leverage, and apply steady torque. Use the long arm for greater reach or when less torque is needed, and the short arm for maximum leverage. Ensure the key seating is fully engaged in the fastener to minimize slippage and avoid rounding. After use, clean off debris and return the key to its storage location to maintain organisation and protect the tips.

Usage recommendations

For prolonged tool life, avoid using the keys as prying tools or for fasteners that require impact or excessive torque beyond typical hand-tightening. Match the correct metric size to fasteners, keep keys clean and dry, and store the set in a dedicated holder to prevent loss and tip damage.