SFX Electric Tapping Machine 31mm to 19mm Conversion Chuck

SFX-M16R Electric Tapping Machine tapping collet tail specification GT12 (diameter 19mm)

SFX-M24HR/M30R/M36R Electric tapping machine tapping collet tail specification TC820 (diameter 31mm)

If you want to use your GT12 tapping collets on your SFX-M24HR/M30R/M36R Electric tapping machines, then you need one 31mm to 19mm Conversion Chuck.