Madrid square single friction baseplate spigot & domical cover Stainless steel 2205 is a superior duplex stainless steel. It features elevated levels of chemical components enabling superior strength and corrosion/pitting resistance. SS2205 is commonly used in harsh marine environments. For timber installation with countersunk fixing, use  Slimline Cover (12mmH) For concrete installation with dynabolts/threaded rods & chemset fixing, use High Cover (22mmH) Suits 12mm glass Available in polish, satin, black and white Fixing kits sold separately. Timber fixing kits: CSK-100-4PK Concrete fixing kits:  S-120ROD-4PK  use with Chemical Anchor:   SOUD-CA1400 Base Plate Advantages: Made from stainless steel 2205 Contemporary tapered top to comply with ‘no toe hold’ requirements. Base plate has four countersunk holes to enable flush fixing. 100mm SS316 countersunk timber screws available (hex drive head) for affixing to timber Square shape with minimal visible fixings Recessed friction plate for neat finish Tapered packer included (1mm to 1.5mm) to enable tilt adjustment of glass. NOTE: All stainless steel products require ongoing cleaning maintenance. To assist with product upkeep, it is recommended to use a proven stainless steel protective coating treatment, particularly where a SATIN finish is selected. EnduroShield Stainless Steel Protective Coating aids in the minimisation of ‘tea stain’ issues occurring on the stainless steel surface. See EnduroShield products:  ENDURO-SSRES and ENDURO-SSC-60 on this website ** Satin finish railing is recommended for indoor installations only. For external railing, consider high polish finish to minimise tea stain possibility.