Available here are 2-Hole Security Drill Bits. This drive system, sometimes known as Snake Eye® or Pig Nose is designed for low to medium torque applications. It has 2 holes drilled into the head which requires a unique 2-pin matching driver to install and remove it. We have a Full range of Self Tapping and Metric Machine Screws stocked in A2 Stainless Steel. This item is sold in singles. Please allow 3 to 5 working days for delivery.