uxcell 20Pcs RC Spare Parts Canopy Rubber Grommet 2.8x5.5x11x4.5mm for 600 Size Helicopter Product Name : Canopy Rubber Grommet;for : RC 600 Size Helicopter Inner Dia : 2.5mm/0.1";Outer Dia : 11mm/0.43" Total Thickness : 4.5mm/0.18";Material : Rubber Color : Gray;Weight : 8g Package Content : 20 Pcs x Tie Rod End Link