The LEOFOTO CELLPHONE CLAMP PC-90II is a professional-grade, all-metal phone holder designed to provide enhanced security compared to standard spring-lock type clamps. Featuring a robust construction, the PC-90II offers quick adjustment to mount your phone securely, with the lock knob ensuring firm fixation. Equipped with 1/4″ sockets on the base and back, it offers versatile mounting options. The base is profiled to seamlessly fit an Arca-pattern quick release system, facilitating easy integration into your existing setup.