The over the sink drainer is made of a lightweight metal material with anti-rust properties. The adjustable handles allow the strainer to stretch and fit over most sinks. The material on adjustable handles are made of a rubber material which is anti-slip but also anti-scratch, preventing damage to the sink and counters.The tiny holes allows water to flow through without any food falling through.There are also four rounded legs on the drainer which allows the drainer to sit in the sink and/or countertops with sturdiness, without damage to the surfaces.