Design your own custom etching on a top cap! Send us your black-and-white PDF file of anything you like, and we will put it on a top cap! WE WILL SEND YOU AN EMAIL IF YOU DO NOT GET BACK TO US IN 24 HOURS WITH A REPLY (does not have to be your pdf, just a reply saying you are creating it, we will message email and phone; if you do not reply in 24 hours, your item WILL be refunded); you have 1 week to create your design after order. FOR BEST RESULTS, BLACK AND WHITE! example photo above!