SP16011 | Holemaker Pilot Pin 6.34mm x 178mm 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: 6.34mm Annular Cutter Depth of Cut: 125mm Overall Length: 188mm