This is the Riffe 9/32 (7.1mm) Tapered Nose Piece Shaft Adapter Features: Made from 17/4 stainless steel, heat treated for hardness Used with RIFFE's SUB-MINI Ice Pick Tip 9/32 (7.1mm) x 16" (40.5cm) Tapered Nose Piece Shaft Adapter (6mm thread) (RPS-A20) Made from 17/4 stainless steel, heat treated for hardness Used with RIFFE's SUB-MINI Slip Tip "