... the above flow!!! Customer is God!!! The specifications of our fiberglass rods/tubes ( outer dia. from 1.0mm to 80 mm ... several millimeters up to 30 kilometers (for small Dia rods ).Fiberglass Application:1) Outdoor activities: tent Pole, kite Rod, arrow ... paddle shafts, bows and arrows, crossbows, golf shafts, slide guides, boat, kayak2) Tool: umbrella shaft, umbrella rod, curtain rod, fence post ...