5/8"-11 外螺紋公頭 轉 1/4" 柄

The threads on this adapter are clean and catch perfectly on both ends, no wobble at all. I used it to hook up a 4.5" grinding wheel to my die grinder, and it held tight through heavy use. Simple, solid solution for bridging these two thread sizes.

I was a bit skeptical about the adapter's thread quality, but the 5/8"-11 male threads cut into the grinder's arbor without any wobble. Tightened down securely with a standard wrench, and now my 1/4" shank flap disc spins true at full RPM.

Threads engaged cleanly on both ends, no wobble once I torqued it down. The steel feels solid enough to handle daily grinding without stripping, and the 1/4" shank side seated snug into my drill chuck.