Zilla Reptile Terrarium Heat Lamps & Habitat Lighting Dome Spring Clip Mounting spring clip attaches to the screen cover and keeps lighting domes securely locked into place Fits most 5-1/2 inch and 8-1/2 inch lighting domes with up to 1-3/4" ceramic sockets Metal construction includes springs and hooks for a secure, yet moveable attachment The perfect solution for preventing domes from falling to the floor and bursting light bulbs or from melting enclosure frames! Easy to install and discreet