Hard cup plunger with rubberized rim and felt lined interior. Metal finger handle on end allows for easy holding and "doo-wah" effects. Measures 6.25 inches (159 mm) in diameter. Can not be crushed like a traditional rubber plunger (well, at least not ifyou plan to keep using it). Best used for big band section work. Works nicely when coupled with the Glenn Miller Short Straight mute (item 30138) or the Pixie mute (item 30143). By Humes & Berg. Click for larger views: