Wiha 5.5 mm nut driver. Your ideal companion to remove, install and adjust the nyloc nut on common brands second stage regulators such as Mares and Cressi.

• Molded on Soft Tactile Pico Grip Handles
• Narrow Profile Precision formed nut drivers
• Wiha Exclusive CRM-72 Special Tool Steel
• Satin Micron Vapor Chromed Finish
• Super Through Hardened Blades
• Handles Proportioned to Blade Size for maximum torque
• Rotating Finger Tip Control Cap for Precise turning control
• Guaranteed Wiha Quality Made In Germany