The quality of the precision machining is immaculate. The size is absolutely perfect to hold 5 capsules of 70mg Vyvanse stacked end to end, so I always have my medication on hand whilst still having a slim enough profile to not feel bulky in my pocket attached to my keychain. The titanium construction makes the Randolph incredibly light without adding too much weight to my keychain in general, and is certainly strong enough to last a lifetime. The only thing I can suggest to improve the Randolph, is to use a thicker O-Ring to prevent breakage. The one included has a habit of getting caught up in the grooves when screwing on the top. An easy & inexpensive enough alteration to not affect my overall 5🌟Rating. Worth the money in every single way. I highly suggest the Randolph over any other keychain medication holder. The size is also perfect to hold on to something half finished to save for later. I love the thing.