GREAT FOR SMALL BIRDS: The Trimmer Plus Cement Bird Swing provides a textured, safe, and secure place for your feathery friend to perch, play, or sing a song on. This 5” swing is suitable for Parakeets / Budgies, Cockatiels, Finches, Parrotlets, Lovebirds, and other small sized birds. MADE OF CRUSHED SEA SHELLS: In addition to naturally trimming your pet’s nails and beak, our Trimmer Plus Cement Bird Swing adds beneficial calcium to their everyday activities. It’s okay for your pet to gnaw at the swing; they’re getting calcium, similar to pecking at a cuttlebone. SECURE MOUNTING: Out of the box, these swings come knocked down, and require assembly before mounting to a birdcage. But don’t worry, they’re easy to assemble, and require no tools! Simply unscrew the bottom nuts, slide the metal frames through the holes, and screw back together. This swing fits on standard wire cages. MEASUREMENTS = Swing Width = 5” / Bottom Perch Diameter = 0.4” / Swing Height = 7” / Width Between Metal Hooks = 4.25” SHOP PENN-PLAX FOR ALL YOUR PET’S NEEDS: PENN-PLAX is a manufacturer and distributor of top quality pet supplies, who specialize in creating excellent pet products for animals, both great and small.