3 x 1-1/4 v-groove wheel 1/2 plain bore
"4 x 2 V-groove wheel 3/4"" RB"
3 x 1-1/2 cast iron V-Groove wheel 3/4 RB
8 x 2 Phenolic wheel 3/4 RB
5 x 2 Ductile wheel (crowned) 3/4 RB