Kitchen sink rack feet are mainly used to support the sink grill, keeping your kitchen clean and tidy and they are suitable for most kitchen sink racks.SpecificationMaterial: PlasticColor: BlackSink Rack Feet Size: 4 x 7.5 x 12.5 mm / 0.16 x 0.3 x 0.49 inch (ID*OD*H)Bumper Size: 4 x 12.5 x 16 mm / 0.16 x 0.49 x 0.63 inch (ID*OD*H)Packing List: 1 Set - 30 x Kitchen Sink Rack Feet and 30 x BumpersAdvantage1. They are made of plastic material, which is lightweight, waterproof, anti-slip, sturdy, durable and has a long service life;2. They fit easily around your sink rack, protecting your kitchen sink from scratch.Instruction1. Choose the appropriate size of rubber feet and bumpers according to your kitchen sink rack;2. Install the rack feet on the bottom of the kitchen sink rack;3. Then put the bumper cover around the sink rack.NOTE: 1. Please confirm the required size and material before purchase; 2. All size above is measured manually, please allow 1mm-2mm error.