Features: Enables clean and efficient routing of cables for your drill down mount Cleanly covers cable access holes Establishes a barrier between the RAM Surface Mount and the attachment area, minimizing vibration while reducing fiberglass and gel-coat damage Constructed of high strength composite and glass filled nylon Includes stainless steel hardware Fits RAM 3.68" diameter round base with a 3 hole, 120 degree hole pattern* Made in the USA Dimensions: Cable slot height: 0.45” Cable slot width: 0.95” Max mounting surface thickness: 1.47” Included Hardware:** (3) 5/16"-18 x 3" Machine Screws (3) 5/16"-18 Nylock Nuts (3) 5/16" Stainless Steel Washers Brand: RAM MountsPart number: RAP-402UWarranty: Manufacturer's lifetime warranty* Will not work with the AMPs hole pattern plates. ** To prevent galling of threads during assembly, it is very important that all threads are lubricated with oil prior to assembly.