Heavy Duty Staples, 5/16 x 5/16-Inch Insulated Staples for Coax, CAT3, CAT5e Cables, for Klein Tools Stapler No. 450-100, Klein Tools 450-002, Silver and White : Amazon.co.uk: DIY & Tools
Gardner Bender MSI-1525T Insulated Electrical Metal Cable Staples, ½ inch, Secures NM, BX, MC, AC and UF, 15 pk : Amazon.co.uk: DIY & Tools
Heavy Duty Staples, 5/16 x 5/16-Inch Insulated Staples for Coax, CAT3, CAT5e Cables, for Klein Tools Stapler No. 450-100, Klein Tools 450-002, Silver and White : Amazon.co.uk: DIY & Tools