These 15 glass knobs came from an estate auction with a large selection of architectural salvage. There are 15 knobs in this listing- three different sizes and all seem to be the same design - great for furniture rehab or restoration. The largest ones ( 8) are 1 3/8" wide and 1 3/8" high ( I have included one extra of this size which has a small chip at the base) , the middle sized ones (3 ) are 1 1/4 "wide and 1 " tall and the smallest ones( 4 ) are 7/8 " wide and 1 " tall. Mounting screws are not included with these knobs. Shipping for these knobs is free in the continental USA.