Check the listing for details. Router Base Plate Bauer/Avid Compact Trim Router 4"x5"x5/16" Clear Acrylic. Condition: New. Listed at 20.99 USD. Router Base for HarborFreights Bauer, Amazons AVID and many others based on the Makita Compact Routers 4"x5"x5/16" Clear Acrylic....A must have! If you are unsure if your router is knock off based on the Makita, please message me. I am a Cabinet Maker by trade and woodworker by passion. I use trim routers everyday, purchased 2 Makita Cordless routers and instantly knew the stock router base was worthless. So, I made my own. My router base is far more stable, safer, durable, and easier to use. There made out of 4"x5"x5/16" clear acrylic, which is much larger and thicker than the stock one. This base is also much harder to break or chip. This router base is 4" x 5" x 5/16" thick. The bit opening is 1 3/8". Your stock screws will work. All edges have been eased and polished as to not damage your work. Please feel free to ask questions. These are made by my hands in Maryland, USA. More router base styles and brands will be coming soon. Were also developing task and industry specific bases and jigs. So, Thank You for viewing and keep checking back. Fast Free Shipping. 30 day money back policy.