Features: 1.The product is made of high-quality rubber, which is soft, wear-resistant and bite-resistant, and has a longer service life. 2.Food grade rubber, non-toxic, odorless, easy to clean, healthy and hygienic. 3.Bionic design, it can be installed in the feeding bottle and other equipment, so that the calf can feel the pleasure of sucking milk in the mother. 4.Natural speed sucking helps to produce a large amount of saliva and help digestion; intermittent feeding avoids foreign body pneumonia. 5.The product is suitable for all kinds of small animals, such as calves. Specification: Feature:_x000D_ _x000D_ The product is made of high-quality rubber, which is soft, wear-resistant and bite-resistant, and has a longer service life. _x000D_ Food grade rubber, non-toxic, odorless, easy to clean, healthy and hygienic. _x000D_ Bionic design, it can be installed in the feeding bottle and other equipment, so that the calf can feel the pleasure of sucking milk in the mother. _x000D_ The product is suitable for all kinds of small animals, such as calves. _x000D_ Natural speed sucking helps to produce a large amount of saliva and help digestion; intermittent feeding avoids foreign body pneumonia._x000D_ _x000D_ _x000D_ Specification:_x000D_ Model: HL-MP76_x000D_ Product Material: Rubber_x000D_ Product color: Red_x000D_ Length: 10cm / 3.9in_x000D_ Diameter: 3.6cm / 1.4in_x000D_ Suitable animal type: Calf_x000D_ _x000D_ Package list:_x000D_ 5 * Calf Milk Nipple_x000D_ _x000D_ Note:_x000D_ The actual product color may deviate from the photo due to light._x000D_ There may be a slight deviation in the measurement of product.