Dual Cobra 3D Printed Unit with dual power cord. All Shells printed in house with PLA Plastic. 
Best Size Cobra Coil For You?
XL Cobra Coil fits most standard 24-25mm quartz Bucket Styles ONLY
 "Recommended heat temperature: 500-600 F"
*NEW v2 XXL Cobra Coil fits 30mm Buckets, XL & XXL Slurpers, HE Towers & Most QCB Scouts Quartz  
"Recommended heat temperature: 600-650 F"
XXXL QCB Charmer Cobra Coil 36mm Wide "Not as tall to make sure joint doesn't get to hot" 
"Recommended heat temperature: 500-600F