STF744 Steeltech Bobbin Holder: Standard Two adjustable tension knobs allow for perfect thread control and the weight of the bobbin is perfectly balanced for rotation and making dubbing loops.
STF745 Steeltech Bobbin Holder: Heavy Duty Heavyweight Bobbin holder made entirely of Stainless Steel, 42g weight helps maintain extra tension on your thread. Hardened steel wide tube is great for heavier or thicker materials. 2 adjustable tension knobs allow for perfect thread control and the weight of the bobbin is perfectly balanced for rotation and making dubbing loops.
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