Stems and springs are removable pins that insert into attachments creating rotation. White and red stems* keep the attachment rigidly in position and provide firm, maximum stimulation. Springs allow attachments to be flexible and provide a more gentle stimulation. Springs and stems are interchangeable. 1 Spring and 1 Stem are included with the Small, Medium, Finger, GMini, GMax and Double attachments.
Price is per stem/spring.*Red Stems are only for a Sybian with a serial number of 11 million or higher