These 7mm wide plugs featuring the Specialized "S" logo can be inserted into your frameset to protect from water or grime intrusion at the front and rear derailleur wire/cable access ports when running a wireless shifting system, or a 1x12 drivetrain with no front derailleur. Small, simple and effective, the plug insertion ends feature relief lines for friction and hold. They are used with many Specialized road and mountain bike framesets that feature 7mm access port holes.