This Magnetic knife holder is made from high grade Aluminum+magnetic stripe and featuring a powerful magnet.It will rust-proof and never lose its powerful magnetic charge Use the powerful magnetic knife strip safely and securely to hold knives, scissors, tools,Keys,other gadgets or any metal objects.they will stay in place and not slide off The Magnetic holder can hold so many metal objects help you save more space,making everything looks orderly.and it can prevent the breeding of bacteria.protect your family health Size: S:31.5*4.5*1.9cm/12.40*1.77*0.75inch,M:41.5*4.5*1.9cm/16.34*1.77*0.75inch,L:46.5*4.5*1.9cm/18.31*1.77*0.75inch Easy Install with some essential accessories.If you have any problems,please don\'t hesitate to contact us.We will Try our best to solve all issues for you.Thank you