Counterweight Shaft Adapter with Stainless Steel Insert for Mach1GTO Mounts shipped since July 2014 (SM1CSA)
Brand : Astro-Physics
If your Mach1GTO mount is is frequently used as a portable mount, you may wish to consider upgrading to this counterweight shaft adapter. The stainless steel insert will reduce the likelihood that you will damage the threads by cross-threading when you attach your stainless steel counterweight shaft.
Important note regarding mount compatibility: This Counterweight Shaft Adapter is compatible with Mach1GTO mounts that have shipped since July 2014, beginning with serial number M10670. If your mount has a serial number lower than M10670, you will need the S900CSA for your mount.
Installation Instructions: Simply remove the original counterweight shaft adapter and install the new one. Note that both components were designed with a through hole into which you can insert an object, like an Allen wrench, to either loosen or tighten the adapter.