Torx Style 6 Lobe Ring and Base Screw Kit contains #6-40 Fillister Head T-10 (3/8, 1/2), #6-40 Oval Head T-10 (1/4, 3/8), #6-48 Fillister Head T10 (1/4, 3/8, 9/16), #6-48 Oval Head T-10 (1/4",3/8") #8-40 Fillister Head T-10 (1/4,3/8,1/2), #8-40 Oval Head T-10 (1/4,1/2), #8-40 Fillister Head T-15 (1/4, 3/8,1/2), #8-40 Oval Head T-15 (1/4, 3/8, 1/2).