The bobbin weight keeps tension on materials when tying and features a foam design in the tube to retain constant spool rotation. Teflon coated bobbin lugs ensure smooth spool rotation. Includes a bobbin threader.
•Optimized bobbin weight (17g) helps keep tension on material during tying.
•Teflon-coated bobbin arms for smooth spool revolution.
•Clever Micro Slit Foam design in bobbin nose to retain constant thread tension.
•Bobbin tube made of zirconium ceramic to reduce thread breakage.
•Comes with a spare threader.