Tile Leveling System Tiles Leveler Spacers - Lippage free tile and stone installation for PRO and DIY - 300-Piece Leveling Spacer Clips Plus 100-Piece Reusable Wedges (1/8 Inch) - Amazon.com
Plastic Wheel Spacers – Heavy Duty – Bluebay Building Products | Specialist Building Products Supplier
Screw-in spacer clips
90mm / 3 Inch Universal PP Pipe Clip with Spacer Block
50 pz Nylon Plastica Standoff Spacer Rivetto Vite Reverse Push In Clip Supporto Fisso Circuito PCB for 3-4 Foro 4.5-5.5mm (Color : RC-14) : Amazon.it: Fai da te