An absolute must for every bondage session: stainless steel suspension bar with 3 cm (1 1/5") diameter. Movable snap hooks are located on the ends of the suspension bars. Stable design - suitable for heavy loads. We recommend Blackstore-stainless steel wrist restraints or even better, the lockable and padded Fist Mitts for use with this product. However, you can use any restraint with a D-ring attached.