Knurling Wheel - 1/4″ Hole Dia., 3/4″ Knurl Dia., 3/8″ Width (25 TPI) - Series KP 1.5mm x 60 Serrations - Hard Jaws Chuck Size 4" to 5" inches Model #: P166DO

Model #: P166DO

Item #: JB559615035

Model #: 3144NH

Mfg #: 80375

Knurling Wheel - 1/4″ Hole Dia., 3/4″ Knurl Dia., 3/8″ Width (25 TPI) - Series KP 1.5mm x 60 Serrations - Hard Jaws Chuck Size 4" to 5" inches Model #: P166DOItem #: SE40KPL225 Brand: Generic USA Model #: SE40KPL225 Product Specifications Arbore Hole Diameter 1 4 Threads per Inch (TPI) 25 Outer Diameter 3 4 Angle 90 Degrees Material HSS Tool Type Knurling Wheel KP Pitch Spiral PackSize 1 Style Left Hand Remarks Circular Pitch Knurls 30 Spiral Knurls 
KP Series Circular Pitch Knurls
The circular Pitch Knurl System is the older system and has been in use many years. The spacing of the teeth