For Canon DSLR  cameras - t1i-t9i 7D 20d-90d t3 t5 t6 5d 6d Not for mirrorless cameras. Works great. filter threads rough no filter can be attached, no biggie.  With front cap.
 
I combine USA shipping 2-20 items ship for only $9. So if you buy 20 items shipping is still $9. If it doesn't discount in cart, refund after payment.