From Amazon
fischer DuoSeal 8 x 48 S A2, universal plugs & stainless-steel screws for wet areas, powerful 2-component sealing plugs for fastenings in damp areas, 25 pcs
Conrad Electronic
Fischer DuoSeal Dowel 48 mm 8 mm 557728 25 pc(s)
ShopBetter24
Wall plugs and screws Fischer DuoSeal 557728 S A2 Waterproofs Ø 8 x 48 mm
Shopaide
Wall plugs and screws Fischer DuoSeal 557728 S A2 Waterproofs Ø 8 x 48 mm