[Material]:The fish tank corner protectors are made of PP material,which is soft and elastic,effectively buffering impact forces and practical.These protectors are suitable compatible withaquariums,fish tanks,pet tanks and can accommodate various thicknesses. [Size]:Fish tank edging protective case with dimensions compatible withbottom feet being 3.9cmx7.9cm/1.54inch x 3.11inch and bracket being 3.7cm/1.46inch [Functionality]:The fish tank anti-collision corner protectors can wrap around the sharp corners of the fish tank,preventing children or adults from getting injured [Features]:The fish tank bases have a strong double-sided adhesive backing attachment.It also features silicone dots at the bottom to prevent sliding and avoid scratching your desktop [Package Includes]:Each package comes with four cross-shaped feet and twelve brackets Specifications: Material:PP Size: Bottom Feet:3.9cmx7.9cm/1.54inch x 3.11inch Bracket:3.7cm/1.46inch Note: Please allow slightly errors 1-2cm differences due to manual measurement. Package included: 4 Cross Feet 12 Brackets