Features:1. The hex head set screws are made of carbon steel with sufficient strength.2. The surface of the double head screw is under black oxidized, and durable to use.3. Suitable for CNC lathe turning tool holder.4. Please check whether the screw size is fit for the turning tool holder before purchasing.Specifications:Thread Type: Right-Hand Thread and Left-Hand ThreadInner Hole: Single HoleMaterial: 12.9 Carbon SteelPitch: 1.25Thread: M8Length: 20mm / 0.79inchHexagon Width: 4mm / 0.16inchPackage Content:5 x Double Head Screws.
eBay