HIGH QUALITY:M6 Female Knob Screws are made of high quality plastic for durability and long service life. STAR SHAPE: The surface of M6 female knob screw is well polished which can offer a comfortable grip feeling. WIDE USED:Suitable for machine tool.Widely used for mechanical equipment, instrument and apparatus, food and industry equipment. Description These M6 female knob screws are made of high quality plastic for durability and long service life.Easy to install and with Surface nice finish for comfortable grip. Suitable Machine Tool: All types Colour:Black Material:Metal + plastic Size:Head Diameter:32mm Thread Diameter:6mm Package Contents: 20 x M6 female knob screws Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.