The HandiWall 8" Loop Hook with Locking Bracket is great for hanging hoses, step ladders, and ropes. Put 2 together to hang extension ladders. Loop is soft coated to protect your tools, and is color-matched granite gray to brackets for a seamless look. The hook engages automatically when installing. Once seated into the slot of the slatwall panels the lock will then close and hold it firmly in place. To remove it, simply press down on the spring-loaded lock. Fits HandiWall and similar 3" on center slatwall panels with L-shaped slots.Measures 9 1/2″ deep x 8 1/4″ wide x 3 3/4″ high. Does not fit Crownwall, Flowwall, Gladiator Gearwall, Proslat or Rubbermaid panels