The STP is a smaller version of the TP. It is the same basic size as our Kenny Smith signature pick, but has sharper corners. The STP in a 50 thickness is the pick that Adam Steffey currently uses. This is the STP in 40/1000ths of an inch thickness(1.0mm). All of our picks are professionally machined, hand beveled, and laser etched. This pick comes with a speed bevel.