The manfrotto 143 magic arm is a versatile aluminium articulating arm which can support up to 3kg and is designed to securely hold various accessories and enable quick positioning of whatever you attach to it ie lighting equipment or an additional camera the arm comes with a central locking lever that can lock all three pivot points on one end is a 58 stud which is threaded with a 38 female socket and on the other end is a standard 20 thread mount this kit includes the manfrotto 14