I have used these several times since you don't need a wrench and can use the ratchet feature in a tight place. My most recent use was to replace hex head bolts on the belt tension adjustment on a drill press. Very close fit (no skinned knuckles) and not much chance of over tightening it.
Item 34277, Ratchet Lever Knob 3/8' bolt 16 tpi: This handle can be used as a replacement for the poor quality handles on Central Machinery lathe 34706, Quality is commensurate with the price. Fully functional and strong enough for the job.
The threads were the wrong size. I checked what I needed, and ordered the correct item, but the handle does not fit. I will go to a local store and find what I need. I can use the item for something else.
I ordered both the 5/16" and the 3/8" Ratchet Lever Knobs. Both knobs get the job done but the molding near the knurled edge is very sharp. I had to file and sand these edges as it was uncomfortable to hold the knurled area to start the threads into an insert on my router table. I own other ratchet handles that do not suffer from this problem.