Options: Variations: 00M7521 - 1 1/2" Sure-Grip, Male, 1" stud, each 1 - $2.50 5 - $2.10 5/16-18 Thread Male Sure-Grip Knob Made from durable plastic, this sure-grip knob in a male configuration can be combined with any of our 5/16-18 nuts, threaded inserts or machine bolts. Stud length is 1 1/2". Care And Use California-Residents-Prop-65-Message.pdf