The Leofoto QS-60M Quick-Link Set is a quick release system that allows tripod heads to be exchanged from a tripod and then locked securely with a simple twist in seconds. The Quick-Link System makes it possible to travel with a single tripod but multiple heads for different applications. https://youtube.com/shorts/n4SDwVeLjwY This set includes one receiver base and two connecting plates. Each component features anti-twist set screws to prevent any unwanted rotation. x1 QS-60 Receiver Base & x2 Q60 Connecting Plates 4mm & 2.5mm Allen Wrenches 6061-T6 Aluminum Construction 3/8"-16 Mounting Stud Fits Heads and Center Column Extensions Leofoto QS-60 Receiver Base: Diameter: 60mm Weight: 106g Leofoto Q60 Connecting Plate: Diameter: 42mm Weight: 27g