LANDEN Low-Profile Clear Acrylic Aquarium Glass Cover Clips, Holder for 4mm Glass Lid - 12pcs/Pack, Minimalist, Compatible with Rimless Tanks of All Thicknesses

Clips width 4mm, 12pcs per pack. Suitable for any thickness of fish tank, but only fit with a 4mm tank lid. When using the Acrylic Clips, the gap between the lid and the tank glass is designed to leave 3mm, so the thickness of the LED lights' inner hook should be less than 3mm.