Convoluted wafers have a wavy, convoluted design. The inside ring of the wafer gets pressed to make the convoluted shape. There are no spacers needed with convoluted wafer.  There is, however, a specific way they need to be installed. Once you get the placement right, convoluted wafers are much easier to install as there is no need for a spacer.

Brosses circulaires à profil plat pour balayeuses, avec âme et matériau de remplissage synthétiques. Disponibles avec des diamètres d'âme et de brosse standard pour s'adapter à toutes les machines courantes.

Steel Profile Brush Rings are available with a synthetic or steel wire for mounting to a roller brush or sweeping roller. Synthetic brushes are ideal for removing leaves and dirt, but combined with steel brush rings, they retain the flexibility to sweep, but with toughness to remove stubborn dirt and snow.