STRONG & RUST-FREE - Heat-treated, hardened steel for a long joy ride. Allen Key design for extra strength & strip resistance. THOUGHTFULLY DESIGNED - Our customized 1.1” (28mm) length gives you some wiggle room to add spacers (<5mm, ⅛”) without needing new hardware in the future. FULLY COMPATIBLE - Made to fit on all standard skateboards, longboards, and cruisers. 100% SATISFACTION GUARANTEED - User instruction and link to step-by-step video tutorial included in the package. 100% Satisfaction Guaranteed or your money back because we have full faith in our products. EXTRA SET - A package of 9 sets. Get an extra bolt and nut for times your parts roll under the workbench.