Everything fit perfect.
I purchased this dust plug for my TPO 12" f/4 Imaging Newtonian telescope, this OTA only comes with a 1.25" dust plug. I don´t know why Optcorp does not include this one in this telescope ... It is necessary to buy it for those who wear eyepieces or accessories of 2 inches in diameter. I recommend that when buying this OTA, immediately buy this item. Fortunately, Optcorp has it as an option to buy