1 star is BEYOND kind. Can't leave 0 stars (although negative stars would be more honest). You couldn't pay me use these things. I bought half a dozen bobbin holders from J Stockard. And I LOVE J Stockard - been buying materials from them for years, LOTS of stuff - I love 'em. But these bobbin holders are absolute junk. Seriously, even at the price of $2.75...if you buy these, just take $2 out of wallet and BURN IT! You'll get the same result. I bought 4 regular, 2 midge, and 1 large tube. Out of the 6, ONE of the midge size worked. Everything else just shredded thread. IF you tie with 4/0 or 6/0 thread with no pressure, MAYBE you can make these work. I DO HAVE TO SAY, the first one I noticed was the wide tube - it may as well have been a razor. I told them about it and they refunded me, no questions asked. So good on J Stockard - exactly what I expect. But the rest? I would rather leave this review, eat the cost, and tell you the TRUTH! At this price, if even HALF of them had worked, I would've been OK with it. But 1 out of 6? No way. I expect better from J Stockard, end of story.