BRUSHROLL AERUS ELECTROLUX 7503-19 REPLACEMENT Electrolux PowerNozzle PN-4 brush roll with 2 rows of bristles and larger metal end collars. This Electrolux brush roll is made of wood and has two rows of black bristles. The wooden portion is 10-3/4 long and has a metal pin protruding 1/2 from one end and a semi-rectangular rubber insert at the other end. The brush roll is 1 in diameter and the metal collars on the ends are 1-3/8 diameter. Electrolux PN-4 Brish Roll 7503-19, EL104, 26-3530-08