Hex L-key Allen wrench set YATO YT-5837, ball end, sizes 1/16"–3/8", 12 pcs

YATO YT-5837 is a 12-piece L-type hex (Allen) key set with ball-end tips, covering sizes from 1/16" to 3/8". The set combines a short arm for direct, high-torque engagement and a long arm with a ball end to reach fasteners at an angle. Tools are finished for corrosion resistance and sized to match common hex bolt and screw profiles used in mechanical, assembly and maintenance work.

Advantages

The ball-end design on the long arm allows access to hex fasteners up to approximately 25–30° off-axis while the short arm provides a secure, torque-efficient engagement for loosening and tightening. The L-shape provides leverage for torque control and improved grip. The set covers a range of imperial sizes from 1/16" to 3/8", enabling compatibility with a wide variety of equipment and fittings commonly found in machinery, bicycles, appliances and workshop assemblies.

Suitable for

• Mechanical repair and maintenance of machines and engines
• Assembly and disassembly of furniture, fixtures and equipment
• Bicycle, motorcycle and automotive small fastener access
• Workshop, hobby and light industrial fastening tasks

Key specifications

• Tool type: L-shaped hex (Allen) keys, ball end on long arm
• Material finish: corrosion-resistant coating
• Number of pieces: 12
• Size range: imperial sizes from 1/16" to 3/8"
• Ends: short straight arm for full engagement; long arm with ball tip for angled access

How to use

Select the hex key that fits snugly into the hex recess of the fastener to avoid rounding. Use the short arm inserted into the fastener for maximum torque when tightening or loosening. For fasteners with limited clearance or angled access, insert the long arm and engage the ball end to operate at an offset angle. Apply steady, controlled force and ensure the key is fully seated before applying high torque to reduce risk of tool or fastener damage.

Usage recommendations

Store the set in a designated holder or rack to keep sizes organized and prevent wear. For high-torque or precision applications, confirm correct fit and consider using a tool with a straight end for final torque to ensure proper engagement.