Ingenious design, automatic grasping It provides an excellent solution for rescue missions or lost-drone recovery,drone grabs something in the air. With a durable composite structure, it can hold and transport in excess of 5 pounds. No servos or motors are necessary to facilitate the grabbing action. Gravity spreads the legs out upon contact, which close when ascending with your recovered objects! Grip Diameter: -2.5 Inches Grip Hold Weight: more than 5 pounds The drone's falling automatically opens, and the drone lifts the automatically. Total Height:about 10cm after installation Notes by OK RC: You need to , require a certain amount of hands-on ability. Consumers are advised to carefully read the product details and consider purchasing. The size and weight of the items to be grabbed need to be within the appropriate range. If hanging under the drone, you need to consider the length of the sling to avoid blocking the sensor under the drone, so as not to cause the drone to crash. claw set only, others not included. Compatible Drone Model: for QAV 250 F450 F550 DIY Model Number: SNM1900 Compatible Drone Brand: colour:black Material:Acrylic Package contents: 1 * DIY Claw Hook 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.