HIPA (Pack of 3) Rubber Grommet for 2-hole 21mm (13/16") Tank Hole Overall O.D. 24.5mm Fits 2-hole 21mm (Approx. 13/16") tank hole For I.D x O.D: 3mm x5mm (Approx. 1/8" x 3/16") fuel lines Qty: 3pcs