SP16002 | Holemaker Pilot Pin 4.73mmx102mm (12-14mm / 50mm DOC) 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: 4.70mm • Annular Cutter Depth of Cut: 50mm • Overall Length: 102mm