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I have the Kovac Icemaster II adaptor for my old (threaded shaft) 8" Mora. Seems to work fine.http://icemasteradapter.com/
Clam auger extension ..fits the Clam Plate and most hand auger drill units and you should be abke to use it it with other auger adapters to extend themhttps://www.fishusa.com/Clam-Ice-Auger-Extensionurl=https://postimg.cc/QVHv7BHJ](Image removed from quote.)[/url]
I think the handle is so the bit doesn’t go down the hole more than anything.
I guess I can't see what the handle does for you on the HT Nero adapter. If the auger catches or hooks up the handle is not going to help control the drill twisting in your hand. The only way a handle helps if it is attached to your drill to help stabilize the drill in your hand.
With the drill.
Used a Clam Plate for a year before switching to the Kovac ice Adapter. Didn’t care for the hassle of unmounting and then remounting a drill onto the Clam Plate if I wanted to run ice anchors in with the drill. The plate didn’t pair up with my drill in a way I liked. Needed to get it....just.....right.. ..or the drill trigger would be stressed. The Kovac allows me to simply un-Chuck and re-chuck the drill to run ice anchors in, plus it’s less awkward on the drill trigger and packs up neater in my sled.
I recommend the Kovac. I have drilled many holes on one of these..
Tried it out today, the handle is worthless. I'll be taking it off and use the handle that came with the drill. Grab the bull by the horns!