Looks like the only Screw in they carry is the Brown Bear (200+). I've been using the Bonehead 145 glue-ons for a couple years now (both, on woodies, and last year, on carbons, with a screw in adaptor, to bring them up close to 175). So I guess I'm still alright. Of course I still have my original six left. I've loved them but, because I haven't had the chance to shoot any critters with them, I can't add much "personal experience" info on performance. I do have every faith in them though, under the circumstances, because of friend batman's successes with the Brown Bears he uses, and other reports.