SP18150 | Pilot Pin 8mm For 150mm Long TCT Cutters & Extension Arbor A pilot pin serves three main purposes:. • Ejects the slug at the end of the cut. • Provides coolant feed into the centre of the cutter. • Locates the centre of the cut Specifications • Diameter: 8mm • Annular Cutter Depth of Cut: 150mm • Overall Length: 205mm