Leofoto SA Tripod Series Apex top comes with x4 M4 mounting sockets (no 3/8th stud).
SA-32 for SA-324C/324CL tripods
SA-36 for SA-364C/SA-364CL tripods
SA-40 for SA-403C/SA-404C/SA-404CL tripods
Build quality is top-notch as it is made of T6061 aircraft-grade aluminum. Also, the black anodized finish makes it abrasion and corrosion resistant. The brass bushings are there for maintenance-free use.