Ernst socket rail details
Ernst 2 Rail Twist Lock Socket Boss 8", Blue – 3/8" (8556)
Versatility is a must when organizing any socket set.
Maximize your storage possibilities with the Socket Boss® from Ernst! Individual rails can be removed or swapped for complete customization.
Add or remove socket clips, label socket sizes with I.D. stickers, trade colors, swap drive sizes, or add ratchet and extension holders — the options are virtually limitless for building your ideal socket setup.
Perfect for storage in drawers, on the bench, or on the go. This compact tray holds a large number of tools while taking up minimal space. Handles on each end make it easy to grab and carry, and Twist-Lock clips keep sockets securely in place during transport to prevent tool loss.
Expand your setup with Ernst socket accessories. Even upside down, your sockets remain locked tight! Each socket rail locks securely in the tray and releases instantly with a push of a button.
The upgraded Universal Socket Rails feature molded end stops and extended space for additional sockets.
• Includes 18 socket clips with I.D. stickers for easy size identification
• Color options: Red (recommended for SAE) or Blue (recommended for Metric)
• Twist-Lock design secures sockets during transport
• Compact, portable design with dual handles
• Compatible with 1/4”, 3/8”, and 1/2” drive sizes
• Made in the USA
Patents: US 6,637,605; US 8,770,418; US 9,364,949; D725,993S
Available in Blue
Product identification
- Brand: Ernst
- Model / MPN: 8556






