[M5 5PCS Nickel]
[M8 2PCS Black]
[M10 2PC Black]
The knurled portion adds friction for extra grip when tightening.
DIY Supplies:Metalworking
is_customized:Yes
Material:Carbon Steel
Type:thumb nut
The thumb nut with knurled outer surface is easy to tighten by hand and easy to disassemble.