SP18200 | Pilot Pin 8mm For TCT Cutters To Suit 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: 200mm • Overall Length: 255mm