1/4pcs Clear Glass Slide Bottleneck Set For Acoustic Electric Guitar Accessories 28 51 60 70 MM Transparent Guitar Finger Slider
https://www.vogueparade.com/shopping/EN/100005481/1/1005003473663378/14pcs-clear-glass-slide-bottleneck-set-for-acoustic-electric-guitar-accessories-28-51-60-70-mm-transparent-guitar-finger-slider//