These pilot pins are compatible with Rotabroach M2 long imperial cutters from a 7/16 to 11/16 diameter.
Rotabroach SRA25 Short Pilot Pin for Raptor 13-52mm Cutters
Rotabroach 24 Piece Raptor X Mag Drill Hole Cutter Set
Rotabroach Raptor T Carbide TCT Mag Drill Hole Cutter 32mm 100mm
Rotabroach Raptor Rail TR Mag Drill Hole Cutter 29mm 25mm
Rotabroach Raptor Rail XR Mag Drill Hole Cutter 33mm 50mm
Rotabroach Mini Hole Saw Cutters 25mm