Hand pump "Pentagon". Inflate/Deflate function. requiring 1/3 less strength than the conventional pumps. It is compact and easy to transport. Needle/hose can be stored for safety, protecting the needle from damage. When inflating a ball, the flexible hose helps to avoid the breaking of the inflation needle. You can inflate the tire of a bicycle too. length : 26cm, net weight : 130g. Made in China. PATENT PENDING.