Standard Bobbin Holder, Regular C&f Design is a door-high quality coil, it helps keep tension on material during tying.

Smart Design Micro Slit Foam in the coil to maintain constant the tension of the thread.

Components:
- Weight of spool optimized (17g) helps keep tension on material during tying.
- arms coil Teflon coated
- Smart Design Micro-Slit Foam bobbin nose to retain the tension of the thread constant.
- tube made of zirconium ceramic to reduce thread breakage.
- Comes with a threader spare.