Industrial grade quality ratchet handle with stainless steel 8mm (M8) male thread 20mm long. Check if the thread is long enough for your application.
Of course it is not a ratchet but a type of spring loaded clutch. You pull back the lever to release the clutch and position the handle to get it out of the way when tight.
This is well made and very strong. Much better than the typical handle you find on Far-Eastern made lathes. The all metal ratchet, durable hard stainless steel thread and 64mm handle will give years of good service.