These bookends are created from authentic 45RPM vinyl records! Each bookend features two 45RPM singles - one on the outside, and one on the inside of each bookend. Each pair of bookends is completely unique, and features retro titles that reach across musical genre and time periods. Bookends are made from 45RPM records bonded to MDF, with cork-backed stainless steel feet. Each bookend measures 7" in diameter, and 1/2" thick. Each pair comes boxed in a windowed display box.