Lot of (225) open end blind pop style rivets with a dome head.
These 3/16" diameter x 3/8" long aluminum rivets have a steel zinc plated mandrel and a grip range ;of 0.250" to 0.375" (1/4" to 3/8").
* Please note that the rivet length is specified by the maximum grip length and not by the physical measured length of the rivet body.
This rivet requires a #11 drill.