Use this Trigger snap for added safety when grooming dogs. Regular Bolt snaps that are on most Grooming Loops and accessories are NOT designed or engineered to be attached directly to Slotted overhead arms. Doing so will put unwanted pressure on the outside of the top of the Bolt Snap and will cause it to break. To avoid this, use the Groomers Helper Trigger Snap to attach to the overhead slotted arm and then connect your Loop or Accessory directly to the Trigger Snap. It is the best insurance you can buy to prolong the life of your Loops and accessories if you have a slotted arm. Groomers should put one on every table.