About this item Package Includes::16 x Acrylic Aquarium Glass Cover Clip,which are sufficient for your daily use and replace The fish tank cover clip is made up of acrylic material, 100% brand new and high quality, non-toxic, harmless. Aquarium lid clips Suitable fofish tank, straw tank, turtle & snake tank, and other pet glass tank, etc. Easy to install- you just need to install the top edge of tank glass into the slot on the clip, install in a second. Please confirm the thickness of the aquarium glass before purchase.