This Hurricane Turning Tools 5/8" (16mm) Keyless Drill Chuck features a JT6 Taper and JT6 to #2 MT Adapter.
Features:

Gripping Range: 1/16" - 5/8" (16mm)

JT6 Taper and JT6 to #2 MT Adapter

Thread form developed for maximum grip

Hurricane Turning Tools is a premium brand of tools and accessories meeting the needs of woodturners and woodworkers. Hurricane Tools include woodturning tools, wood lathe chucks and jaws, drill bits and abrasives. Hurricane products are made in the USA and throughout the world, balancing the need for both high performance and affordability.