1" and 0.5" thick V-Flat hinges which use singe M5x60 SHCS and nut. The hinge cover gets glued on as does the head of the SHCS. The Nut slides into the nut trap within the handle. The handle is used to tighten or loosen the hinge, thereby allowing or disallowing V-Flat angle, or even allowing for adjustable hinge friction between locked and unlocked.