Umpqua Tiemco Ceramic Bobbin
The Ceramic Bobbin from Tiemco is extra smooth, so as not to cut your thread. Not only are they the most reliably smooth, they're incredibly durable. Choose from straight or curved, based on aesthetics. Smooth ceramic will keep thread intact Long-lasting Available in straight or curved.
Ratings & Reviews
Really nice, but expensive
Only 3 stars because of price. It is a nice bobbin, wraps well and smooth and no thread damage. But the price, I can get 2 Dr. bobbins for this price and they do just fine for what I need.