Material:Prevent Scratches black steel matte baking varnish Easy Installation:Vertical fixed on the rack mounting rail with cage nut bolts Size Application:Rack cage nut 1U Brush Cable Management Panel with Cable Entry Warm Tips:3 Pack makes the freight less for each product,for protect your equipment from normal and stable operation,thus reducing failures and extending use Service:Please rest assured to buy,we provide return service,If you need more support,Please feel free to contact us.