fiber frame C style as following :

when we ship this frame to you , we will seperate it into several part, you need to install it yourself, we will send you email for installing reference web address after your email request .

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                 this frame work for out trex 3dx 450 CNC head combo and tail combo, notice head combo is this style as following , it will fit our frame

trex x/xl , 3dx 450A ,HDX 450 all use this CNC head combo