7100 Twist LocTwist Lock Stobe Tube 7100-TLC$60.28 7121 Clear TubeHide-A-Bulb Clear Strobe Tube 7121-000$52.46 7121 Amber TubeHide-A-Bulb Colored Strobe Tube (Amber) 7121-amber$59.63 7121 Red TubeHide-A-Bulb Colored Strobe Tube (Red) 7121-red$78.34 5 Inch Stobe 5 Inch Linear Strobe Tube 7300-500$69.53 6 Inch Strobe6 Inch Linear Strobe Tube 7300-600$80.99 6-1/4 Strobe6-1/4 Inch Linear Strobe Tube 7300-625$69.53 6-3/4 Inch Strobe6-3/4 Inch Linear Strobe Tube 7300-675$80.99