I only started using these bits this year after buying them last year. The beats themselves may be okay, but what makes this type of beat really good and the heart of the beat are the reels. I started using the medium 1/2" and ended up rounding about 18" and the roller bearing flies past my head. Well I thought maybe it was a marriage so I ripped the video off of one of the other bits (same mfg) and literally a minute later the same thing happened the video flies out of the bit. The hex bolt was very tight so it's not a problem. I then stole a roll from another brand of flushing nozzle and all was fine. Don't waste your time and money with these cheap beats. I found Yonico to be very good but inexpensive.
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