5/8" (15.9mm) Horizontal Stab Tube Set, Carbon Fiber (Gator)

Gator RC Horizontal Stab Tube Set, 15.9mm (5/8") x 355mm (14") Carbon Fiber, GS1058

Carbon Fiber Tube and Socket 5/8" (15.9mm) x 14" (355mm)

The weight of the tube is .81 ounce or 23 grams.
Socket 10 grams .35 ounces

The outside diameter of the outer sleeve is 16.4mm (.645")