عجلة قفل، ذراع صامولة نصفية

The half nut lever fits perfectly into the SC4 assembly with no slop at all. Machining is clean and the locking wheel engages exactly as it should. Feels like a quality replacement that will hold up over time.

Never had a problem with the stock part, but this replacement feels a lot more solid once it's torqued down on the half nut. The lever action is crisp and it seats exactly where part #305 should on the SC4 diagram.

Installed this locking wheel on my SC4 lathe and the half nut lever engages much more smoothly than the original. The knurled grip is a nice touch, makes adjustments easier without needing a tool.