500 Pcs 25 Size Set Screws Metric&SAE Set Screw Assortment Kit 12.9 Alloy Ste…
12.9 Alloy Steel: Set screws are made of durable 12.9 grade alloy steel and feature black zinc plating technology.
12.9 Alloy Steel: Set screws are made of durable 12.9 grade alloy steel and feature black zinc plating technology.