Sufficient quantity for AI breeding: the package contains 20 sets of dog breeding kits, including 20 insemination catheters, 20 plastic centrifuge tubes, and 20 semen collection bags, providing adequate supplies for artificial insemination in dogs Proper size: the insemination catheter measures 30 cm in length; both centrifuge tubes and measuring syringes (without needles) have a 5 ml capacity, making this breeding kit suitable for small and medium-sized animals Insemination catheter: made of PVC material, the catheter is flexible and can be bent easily without cracking or deforming; each catheter is individually packaged with a smooth surface, ensuring reliable and safe use for animal breeding Centrifuge tubes: designed with screw caps to help prevent leakage; smooth and flat inner surface minimizes residue; clear markings allow for easy reading Applicable scope: this artificial breeding kit is suitable for small and medium-sized animals such as goats, sheep, pigs, and similar breeds; a practical tool for artificial insemination Material: PVC Color: white and blue Package Contents: 20 x insemination catheters (30 cm) 20 x semen collection bags 20 x centrifuge tubes (5 ml) Only the items listed above are included; other accessories are not included Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm