A weight assembly for a faucet having an extendable hose with a spray head, the weight assembly comprising: a counterweight including a channel into which the hose is to be placed in installed state, the channel) being defined in the weight assembly in a X-axis of the weight assembly, the channel having an elongated first opening defined therein in a Y-axis direction of the weight assembly, the first opening having a longitudinal height measured in a Z-axis direction of the weight assembly, the longitudinal height being larger than the diameter of the hose to be installed in the first opening, the depth of the channel measured in the Y-axis direction being larger than the diameter of the hose, the hose being in it's installed state accommodated in the channel completely; the counterweight also including an orifice formed on the central position thereof along the Z-axis direction of the weight assembly, the orifice passing through and communicating with the middle section of the channel; the counterweight further including a first accommodating cavity defined on the top end thereof in the Z-axis direction of the weight assembly and a second accommodating cavity arranged on the bottom end thereof in the Z-axis direction of the weight assembly, the orifice extending from the first accommodating cavity to the second accommodating cavity; a retainer inserted into and extending through the second accommodating cavity, the orifice, and the first accommodating cavity and including a notch arranged on the middle section thereof to define a second opening facing to the first opening of the counterweight; the notch having an arc-shaped contacting fringe formed on the bottom end thereof and corresponding to the peripheral wall of the hose; the longitudinal height of the second opening measured along the Z-axis direction of the weight assembly being larger than the diameter of the hose; characterised by a pressing member mounted on the top end of the retainer; a resilient element arranged between the first accommodating cavity of the counterweight and the pressing member to push the pressing member thereby driving the retainer to move upwardly along the Z-axis direction, such that the hose in it's installed state in the notch of the retainer is retained between the contacting fringe and the channel. a counterweight including a channel into which the hose is to be placed in installed state, the channel) being defined in the weight assembly in a X-axis of the weight assembly, the channel having an elongated first opening defined therein in a Y-axis direction of the weight assembly, the first opening having a longitudinal height measured in a Z-axis direction of the weight assembly, the longitudinal height being larger than the diameter of the hose to be installed in the first opening, the depth of the channel measured in the Y-axis direction being larger than the diameter of the hose, the hose being in it's installed state accommodated in the channel completely; the counterweight also including an orifice formed on the central position thereof along the Z-axis direction of the weight assembly, the orifice passing through and communicating with the middle section of the channel; the counterweight further including a first accommodating cavity defined on the top end thereof in the Z-axis direction of the weight assembly and a second accommodating cavity arranged on the bottom end thereof in the Z-axis direction of the weight assembly, the orifice extending from the first accommodating cavity to the second accommodating cavity; a retainer inserted into and extending through the second accommodating cavity, the orifice, and the first accommodating cavity and including a notch arranged on the middle section thereof to define a second opening facing to the first opening of the counterweight; the notch having an arc-shaped contacting fringe formed on the bottom end thereof and corresponding to the peripheral wall of the hose; the longitudinal height of the second opening measured along the Z-axis direction of the weight assembly being larger than the diameter of the hose;