OC Drill Bit Passing Pin and Graft Passing Pin (Beath Pin) are used in ACL-PCL surgeries as a guide to create tunnels in the tibia and femur. The pins hold the tunnel sites in proper alignment, allowing them to be drilled accurately while protecting other parts in the area. The Drill Bit Passing Pins are available in 2.3, 2.4 and 2.5mm diameter while the Beath Pins are available in 2.4mm diameter with different type of Tips like Flute, Spade and Diamond.