Unlock unparalleled flavor quality, enjoy extended sessions with the exceptional heat retention capabilities, ensuring every moment counts and your experience is maximized to the fullest. Features: Ceramic & DE Coil 360 Heating Chamber Wall Pure Taste & Quick Heating Depth: 8.4mm Inner Diameter: 9.5mm Included: 5 x Yocan C4-DE Plus Ceramic & DE Replacement Coils