Attributes . Keystone: 1/4 in x 1 1/2 in, 1/4 in x 4 in, 5/16 in x 6 in, 3/8 in x 8 in, Phillips: #2 x 1 1/2 in, #1 x 3 in, #2 x 4 in, #3 x 6 in . Names