BED MAKERS Wonder PINS Piece Review

This set of pins was purchased to attach the bed edge to the mattress spring. Attempting to rotate the pins into position causes the plastic cap to disengage from the pin, causing it to slide down exposing the sharp point. Obviously you can't put a mattress over the exposed pins so I had to use plastic tape to close them. What should have taken about 15 minutes turned into an hour-long task, made even more difficult by open contacts.