I've mainly bought slotted buttons from Epic Militaria but great service, nicely priced items, timely delivery, products great and perfect for application. Would recommend. In regards to said buttons purchase, I've tended to buy multiple lots (usually 30 total per size), the 19mm and 28mm. The 19mm are all 19mm, the listed 28mm I've received slotted buttons at approx. 22mm and 25mm in varying amounts with each 30 items (total) purchase, this isnt too much a problem and I found they respectively suit different apparel quite nicely but I thought I'd mention in review for prospective end user consideration (Thus far I've used them on outerwear jackets and cargo/workwear type trousers). They can be dyed easily too I've found. They take dye well and can handle being kept on a rolling boil in a dye solution. That's about it really, would do business again with EM. Cheers! :D