27mm 316L stainless steel self tapping screws and carbon fiber washers for connecting Armstrong straight footstrap.
Note: Do not use with WKT board (it will crack the board), 19.5mm machined screws needed.
The hole size should be ø4.2mm; if the diameter is too small, it could damage the hole or cause the screw to break.
Retail price source: Armstrong Foils USD retail. Converted to EUR using the ECB reference rate dated 2026-07-24 (1 EUR = 1.1377 USD).