uxcell Knurled Thumb Nuts, 12Pcs M4 Carbon Steel Nut High Head Through Hole for 3D Printer Part, Black 12 industrial_Oct2022 1% nose drops are suitable

1% nose drops are suitable for use in school children from 6 years of age and adults

can be used for 120 minutes when the device is fully charged

reduce fatigue and pain

we also add a tiny 1

long life excellent moistureproof

uxcell Knurled Thumb Nuts, 12Pcs M4 Carbon Steel Nut High Head Through Hole for 3D Printer Part, Black 12 industrial_Oct2022 1% nose drops are suitableuxcell Knurled Thumb Nuts, 12Pcs M4 Carbon Steel Nut High Head Through Hole for 3D Printer Part, 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] Knurled thumb nuts are designed with clean, compact, and accurate thread,