The bottom of a Gatorade bottle is meant to hold the cap. : r/pics
Bottom" Cap for Sale by ChrisOrton | Redbubble
FOX Internal Die-Cast Bottom Cap Assembly for Transfer Seatpost as from 2018 - 825-07-002-KIT
Trumpet MONSTRO Bottom Valve Caps - KGUmusic
Baseball, Tennis Cap Vector Illustration Featured Front, Back, Side, Top, Bottom Isolated On White. You Can Change The Color Or You Can Add Your Easily. Royalty Free SVG, Cliparts, Vectors, and Stock
Bottom" Cap for Sale by Babyloniadesign | Redbubble
Zshaft Cap Bottom - Tapa Inferior del Eje Z – CreativaShop
B&S Bottom Valve Cap Trumpet SP – Thomann España
Bottom Shelf Caps
Yamaha Trumpet/Cornet Bottom Valve Cap – Band Repair Parts | Band Repair Parts