23 Jul 12Pcs Knurled Thumb Nuts M4 Carbon Steel Nut High Head Through Hole Black
Description: [Material] Our knurled thumb nuts are made of carbon steel, with black nickel plated in the surface, high-hardness, durable, wear-resistant, sturdy, not easy to rust or fade, with a flat head and round knurled body, which can be used for a long time. [Advantage]...