Knurling Wheel - 1/4″ Hole Dia., 5/8″ Knurl Dia., 1/4″ Width (16 TPI) - Series GK Acme Serrated Key Type - Soft Jaws Chuck Size 12" inches Model #: 9251710040030

Model #: 9251710040030

Model #: 219–8826

Item #: GM75BT50SK6165

Item #: TE124834190

Item #: 11905957

Knurling Wheel - 1/4″ Hole Dia., 5/8″ Knurl Dia., 1/4″ Width (16 TPI) - Series GK Acme Serrated Key Type - Soft Jaws Chuck Size 12" inches Model #: 9251710040030Item #: SE40GKL216 Brand: Generic USA Model #: SE40GKL216 Product Specifications Arbore Hole Diameter 1 4 Threads per Inch (TPI) 16 Outer Diameter 5 8 Angle 90 Degrees Material HSS Tool Type Knurling Wheel GK Pitch Spiral PackSize 1 Style Left Hand Remarks Circular Pitch Knurls 30 Spiral Knurls 
GK 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