Magnetic Reef Coral Frag Rack Strong N52 Magnets For 1/2In Glass (Black)

8.5 x 3.5 x 2.5 with 1/2 frag holes MATERIAL: 100% Aquarium safe epoxide resin / waterproof sealed N52 Neodymium Magnets ADAPTATION: For up to 1/2 thick GLASS aquarium not recommended for acrylic aquarium FEATURE: Simulate real live rock structures and textures perfectly blend into your reef