To provide a reinforcement of strong section using a material of the same amount, and to increase the contact area with cement using a material of the same amount by forming a slender member of triangular section so as to provide the strength.

A hose 1 of a slender member is formed of triangular cylindrical section so as to provide the strength. The hose 1 is an elastic body formed of rubber, synthetic resin or the like, its section is not circular but triangular, a corner part is present in the axial direction and difficult to bent and break. A twisted part can be easily discovered in the hose of triangular section, and it is easy to eliminate the twist. In addition, in the hose of triangular section, a part where a hole is opened can be easily located upward compared with a hose of circular section, and tap water can be sprinkled using a tap water facility. This hose 1 is formed of an elastic material, and when it is externally fitted to a faucet, even when its section is triangular, it can be expanded and closely attached to an outer circumference of the faucet.