[High Quality]the material of this chicken/pigeon feeder cups is environmentally plastic, odorless, wear-resisting,durable. The edges of the pet bowl are smooth without burrs. Very safe for your , poultry, rabbit. [Easy to Install]the back of bird cage cups have hooks , Easy to on a cage. [User-]It can be used not only as feeder dishes but also as cage water bowls. and easy to clean. [Wide Application]The bowl can also be used to feed pigeons,dove, parrots, cockatiel, conures, canary, small animals, finches ,doves, budgies. colour: blue Material: plastic Size: Big: 11x5.9CM Package Contents: 10 x Birdcage Cup Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.