ProEquip Heavy Duty Syphon Pump 20LPM Sockets (Impact) 500 Pieces Replacement Packs Available Diameter:12mm 5 16" 500 Pieces Replacement Packs Available Part # Size Pack Qty C510 1 3 16 External Tooth 50 C510 2 1 4 External Tooth 50 C510 3 5 16 External Tooth 50 C510 4 3 8 External Tooth 50 C510 5 7 16 External Tooth 20 C510 6 1 2 External Tooth 15 C510 7 5 8 External Tooth 10 C510 8 3 16 Internal Tooth 50 C510 9 1 4 Internal Tooth 50 C510 10 5 16 Internal Tooth 60 C510 11 3 8 Internal Tooth 50 C510 12 7 16 Internal Tooth 20 C510 13 1 2 Internal Tooth 15 C510 14 5 8 Internal Tooth 10 315 Pieces Replacement Packs Available Part # Size Pack Qty C1770 1 1 4 x 1 2 30 C1770 2 5 16 x 9 16 40 C1770 3 3 8 x 5 8 30 C1770 4 7 16 x 3 4 30 C1770 5 1 2 x 7 8 20 C1770 6 9 16 x 15 16 10 C1770 7 5 8 x 1 20 C1770 8 3 4 x 1 1 8 10 C1770 9 7 8 x 1 1 4 5 C1770 10 1 x 1 3 8 5 C1770 11 5 x 10mm 30 C1770 12 6 x 12mm 30 C1770 13 10 x 20mm 30 C1770 14 12 x 22mm 20 C1770 15 20 x 30mm 5 RECOMMENDED USE For water based fluids detergents soaps waxes antifreeze & some mild acids DO NOT USE WITH flammable liquids concentrated acids & fluids over 60 degree C Constructed with a polypropylene head and pick up tube