Sufficient 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 canine artificial insemination. Proper size: the insemination catheter is 30 cm in length; both the centrifuge tubes and measuring syringes (without needles) have a 5 ml capacity, making this kit suitable for small and medium-sized animals. Insemination catheter: made of PVC material, the catheter is flexible and can be bent without cracking or deforming. Each catheter is individually packaged with a smooth surface, ensuring reliability and safety during use. Centrifuge tubes: designed with screw caps to help prevent leakage; smooth and flat inner surface minimizes residue. Clear measurement markings allow for easy reading. Applicable scope: this artificial canine breeding kit is suitable for small and medium-sized breeds, including dogs, goats, sheep, pigs, and other similar animals. A practical tool for artificial insemination procedures. Material: PVC Color: white + blue Package Contents: 20 x insemination catheters (30 cm) 20 x semen collection bags 20 x centrifuge tubes (5 ml) Note: The package includes only the items listed above. Other products are not included. Lighting and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.