Headboard is good looking, but be prepared to add extra support pieces for connecting the frame securely if you have a cal king mattress. 

We attached the headboard to our frame as designed, but it was quite wobbly. We cut a piece of wood ( approx 2"x2"x14") for each side and bolted them into the posts in front of the cross piece ( in the corner formed by the post and cross piece). We attached our frame to those pieces. The result is a sturdy connection with no wobbling, but there is a gap between the mattress and the headboard. Not a big deal with pillows on the bed, but some may not like this. For the good price it was worth it to us.