M5 M6 M8 M10 M12 Aluminium Unthreaded Standoff Spacer Bushing Washer Round Hollow Gasket Sleeve Length 2 3 4 5 6 7 8~ 10 20mmHome Improvement > Hardware1,34 USD (≈ 1,20 €)DisponibileSold by AliExpress WWVai al negozio