Check the listing for details. 4pcs Knurled Thumb Nut, M5 12mm OD 16mm Height Aluminium Alloy Wine Red. Condition: New. Listed at 14.58 USD. What is it?A knurled thumb nut is a hand-tightenable fastener featuring a diamond-patterned textured surface for secure grip without tools, great for frequent-access components like consumer electronics panels, industrial equipment, and furniture assemblies where quick adjustment matters.What will I get?Aluminium Hand Screw NutSize: M5 x 12 x 16 mm (ID x OD x H);Material: Aluminium Alloy;Color: Wine Red;Style: Knurled Nut;In the package of: 4pcs x Knurled Thumb NutAre there any advantages of this product?Aluminum alloy knurled thumb nuts offer lightweight strength and corrosion resistance, excellent for frequent hand adjustments in applications like electronics or outdoor equipment. The knurling ensures a secure grip, while aluminum's non-marring nature protects surfaces.