Carl15051 Bidex perforating/Scoring Blade Set for Personal/Professional Rotary Trimmers, Blue

Are these blades for the carl rt-200, the picture package shows they are but the description says for use with CUI12200, 12218, and 13100 trimmers?

Will these blades work with carl dc-200 (not "rt") 12" cutter? it's labelled as "professional" & home-office-studio.

Is this blade compatible with the carl 12"/a4 personal rotary trimmer? not sure if i can get the original k-13 straight blade. tia!

Do they come with an adapter tht is easily changeable? Cuz I purchased blades but with no adapter I can’t figure out how to change them