# 6 through # 10 and 1/4" through 5/16" x 3/16" through 1-1/2" Long Other sizes available on request. SIZE1/4-20,5/16-18,3/8-16,1/2-13,6-32,8-32,10-24,10-32LENGTH3/16",1/4"3/8",1/2",5/8",3/4",1",1-1/4",1-3/8",1-1/2",1-3/4",2"2-1/4",2-1/2"GRADEGR1,GR2,GR3