50pcs m5x5mm stainless steel hex socket set cap point grub screws nge size:50 pcs m5x5mm<br> made of stainless steel, hex head grub screws cup point socket. <br> often used for holding a pulley, gear, or other parts from turning relative to a shaft. <br> stainless steel provides strength and offers good corrosion resistance in many environments. <br>