Brand new black inspection cover for GM 700R4 automatic transmissions.  2 3/8" - 2 7/8" starter slot. 
This cover fits passenger car transmission cases only where the OEM cover is attached w/ 4 small coarse threaded screws. 
This cover will not fit truck transmission cases thats use the OEM cast aluminum cover and are attached with 6 metric threaded bolts.  Looks good, toss that old beat up nasty one!