Hello so I am trying to mount my tv using a rosewill RHTB-16001 and trying to drive in the pilot holes to be able to screw in the lag bolts.
Following the manual using a 1/4 inch drill bit I drilled into what i believe to be the stud locations using a stud finder that seems shoddy, and attempting to find by measuring from corner. I'm pretty sure i got them as the two locations are about 16 inches apart so I drill into it and get about 1-1.5 inches in when i hit a pretty solid surface. It seems like the stud but if I flash a light on it it looks metallic. It gives that metal look on the two separate stud locations I found. Are these metal studs? if they are what are my options for mounting? Pictures attached
Mount https://www.amazon.com/Rosewill-Monitors-800x400mm-Extension-RHTB-16001/dp/B01N8Q22VF