Home » Products » Knob Kits Knob Kits Knob kits allow you to always have a supply of instant thumbscrews on hand. Perfect for R&D, maintenance and machine shop applications. Pair our knob and screw kits together for complete assembly capability. Black Medley Kit (Inch)295 piece knob kit that includes 4 styles in various inch sizes. DETAILS Black Medley Kit (Metric)260 piece knob kit that includes 4 styles in various metric sizes. DETAILS Socket Head Cap Screw Kit360 piece SHCS kit in various sizes and lengths in inch. DETAILS