Drennan Carp Bungee BushCarp Bungee Bushes are high-quality PTFE external bushes designed for use with all hollow pole elastics. Small – 2.5mm internal diameter (Green 6-8 Carp Bungee or 10-14 solid elastic) Medium – 3mm internal diameter (Yellow 10-12 Carp Bungee or 12-16 solid elastic) Large – 3.5mm internal diameter (Pink 14-16 Carp Bungee or 14-20 solid elastic)