Brüder Mannesmann M 299 Conjunto de 7 chaves Allen em L, aço cromo-vanádio, métrico 2,5-10 mm, DIN 911, cromado acetinado, com suporte de clipe de plástico

Hex socket screws are everywhere in furniture assembly, bicycle maintenance, and machinery repair, but without the right key, they quickly become a source of frustration and stripped heads. The Brüder Mannesmann M 299 set puts an end to that with seven precisely sized L-shaped hex keys, always at hand in a durable plastic clip holder.

Who is it for

This set is for DIYers, mechanics, and technicians who need a reliable, compact hex key solution for fastening and loosening hex screws. The L-shape provides excellent leverage for high torque applications, while the holder keeps the keys organized and easy to carry.

Main features

• 7 metric hex keys: 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm
• L-shaped design for high torque and access to recessed screws
• Chrome vanadium steel for strength and durability
• Satin chrome plated finish for corrosion resistance
• Durable plastic clip holder for organized storage and portability
• Conforms to DIN 911

Specifications

• Set type: Hex key set
• Number of pieces: 7
• Key profile: Hexagonal
• Metric sizes: 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm
• Material: Chrome vanadium steel (CrV)
• Surface finish: Satin chrome plated
• Tip design: Standard hexagonal end
• Handle shape: L-shaped
• Storage solution: Durable plastic clip holder
• Standard compliance: DIN 911
• Corrosion resistance: Yes
• High torque capability: Yes
• Application suitability: Fastening and loosening hex screws
• Tool type: Allen wrench
• Ergonomics: Simple, effective L-shape for leverage
• Portability: Compact design with holder for easy transport

Tips

Always use the correct size key to avoid rounding off screw heads. For stubborn screws, apply penetrating oil and allow it to work before applying torque. The long arm provides extra reach, while the short arm offers maximum leverage in tight spaces.