... double action hand pumpModelHT-115Specificationhand pump(2Liter* 1.4strokes)4.5" , 5" , 8" , 11" , 14" , 16" ,19" , 20" for chooseSpecial interlock system to ... /pc . 12pcs/cartonDelivery time : 10-15 daysCarton Size : 64cm x 44cm x 53cm,NW 12kg,GW 14kgThe material is plastic.Features beauty ... pump Means:pumps air on both up & down stroke 4.5''/ 5''/ 6''/8''/10'' hand air pump