Richohome Heavy Duty Non-Interlocking Bed Rail Brackets Wooden Bed Brackets - Set of 4 As advertised. Arrived quickly. Gear racks are screwed into the plates with just a few threads. I haven't seen a way to "tighten" or secure the pin to the plate. I chose another bed rail bracket from the same company: https://www.amazon.com/gp/product/B01KVLUPDE/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 This bracket was more difficult to cut grooves in my bed. News, but overall I find it much safer and more durable.