The RCG-2 with Racks & Rack Cabinet Accessories Card GuideSnap InNatural4 in Lg Card GuideSnap InNatural500Bag is an electronic part manufactured by ESSENTRA. It is a snap-in card guide with a natural finish that measures 4 inches long and is designed for use in rack cabinets. The card guide is compatible with various rack types including 19-inch EIA racks, 23-inch EIA racks, and all adjustable rack cabinets. The card guide is ideal for securely fastening cables, cable management, and other rack accessories to a rack cabinet. It is made of durable ABS material and comes in a bag of 500 pieces. The card guide is also UL recognized for safety.