Amazon.com: ARRIS 6mm x 4mm x 420mm Carbon Fiber Tubes, 6mm 3K Roll Wrapped 100% Pure Round Carbon Hollow Rod for Quadcopter Multicopter Twill Matte (2PCS) : Industrial & Scientific
Amazon.com: BDI116852 Beadings Coal Crystal Beads Black Jet Beads Loose Stone Beads Carbon Crystal Beads 4mm 6mm 8mm 10mm 12mm 1 of 15" Full Strand - ( Dia: 12mm 1string ) : Everything Else