THREAD MAKER ACCESSORY FOR WOOD LATHE

1). Thread pitch of 2 standard screw stem: 1.5mm(1"X16TPI) and 2.5mm(1"X10TPI) 

2). Diameter of screw stems:1"

3). Diameter of 2 tool post bars: 1" and 5/8”

4). With one thread adaptor: External M33X3.5, Internal 1"X8TPI

5). Max thread-making length: 50MM