Cane Creek Hellbender 70 Visco Lower Headset - ZS56/40-H8 Mid Tune BlackCane Creek Hellbender 70 Visco Lower Headset ZS56 40 H8 Mid Tune Black. Building upon Cane Creeks ongoing legacy of bicycle headset innovation the Hellbender 70 Visco brings patented steering stabilizing technology to a wide variety of cycling disciplines. Designed to reduce high frequency oscillation of the bicycle steering assembly known as speed wobble. The Cane Creek Hellbender 70 Visco headset helps riders maintain control reduce fatigue and ride