Silicone anal beads start at 0.25 in. diameter at the tip and widen gradually to the 1 in. base. Total length is 7.75 in., 6 in. insertable. Features removable silver bullet vibe and 3 LR44 batteries, included. Bullet has 7 functions of vibration, pulsation and escalation. Do not use beads with silicone lubricant.