Compatibility: Compatible with for 4 Pro drones to seamless fit and optimal functionality Efficient delivery: Advanced remote-controlled airdrop mechanism, ideal for precise delivery and delivery of payloads Enhanced features: Improves drone performance, making it ideal for photography, agricultural applications, fishing, and emergency supplies delivery design: Made of high-quality materials to withstand a variety of environmental conditions, ensuring reliability and durability Easy installation: This accessory is quick and easy to install, without complex tools or drone modifications, and can be upgraded instantly Color: As Shown Material: ABS+PC Package Contents: 1 x dispenser 1 x charging cable 3 x rings 1 x dispenser cable 1 x stud screw 2 x silicone gaskets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.