High-quality, handcrafted restraints are available from Sinvention
At Serious Male Bondage, you can see two pieces of stainless-steel bondage gear that PsychoSJ and Fesselschnecke built. They used computer aided design (CAD) and a computer-controlled (CNC) laser cutter to make a bondage chair and a vertical bondage stand.
See the VIDEO at Serious Male Bondage
Title of this video: Psycho SJ Bondage Projects