Schrader B732471
Schrader Bellows B732471 NSMP Hydro Check Kit - New Old Stock
What stands out is the 530*200*150cm or 208*79*59in, which works well for bulk inventory.
Schrader Bellows B732471 Hydro Check Seal Kit New Old Stock See Pictures
A practical detail: the rounded corners includes rivets, so it handles bumps better.