ZRM&E 20PCS 1/4 inch x 20mm Threaded Insert Nuts with Hex-Flanged Washer for Wood Hex Drive Head Screw-in Type Furniture Embedded Screw Plug : Amazon.co.uk: DIY & Tools
M8 x 25mm, FLANGED HEX Drive Screw in Flange Threaded Insert for Wood (Type D) (10) : Amazon.co.uk: DIY & Tools