Sizes are 13/16 in. (21mm) square, 7/8 in. (22mm), 15/16 in. (24mm), 1 in.; 1-3/16 in.; 1-1/2 in. (38mm); Deep Wall: 1-1/16 in. (27mm), 1-1/8 in., 1-1/4 in., 33mm