Because it is handy for accomplishing restraint goals without the need for flexibility or other furnishings to use as an attachment point. Creativity is really the best tool, but this sure gets the job done.
Sassypants is the collared submissive of Exiled Welshman. He's my world.
Friends are always welcome, but Daddy doesn't share, so messages of a sexual nature are not.
Trying not to sound too much like Amazon, but... if you like spreader bars, you might like hobbles, stocks and other similar devices. You can get spreader bars that have wrist cuffs midway along their length. Versatile stuff.