Wasatch Wood Trim Bobbin Standard & Mini: Smooth operating, durable Wasatch bobbins feature high quality, well finished stainless steel limbs and tubes (Standard & Mini) Standard & Mini: The spool bearing beads are polished brass, which provide silky smooth bearing surfaces and the extra weight needed to hold fly parts secure when the bobbin is hanging (Standard & Mini) Standard & Mini: Cocobolo wood trim enhances both function and aesthetics (Standard & Mini) Small Spool Ceramic: Delicate, graceful bobbin especially suited to tyers who tie small flies Small Spool Ceramic: Features a barrel made entirely from silky smooth white ceramic, stainless steel limbs and brass spool bearing beads - perfect for tying with silk thread