ROLLERS: 1-3/8″ dia. x 18 ga. galvanized steel, model 138G, on model BSR.
WHEELS: 1-15/16″ dia. prelubricated ball bearing wheel with hardened raceway, zinc plated on model BSW.
ROLLER: Formed galvanized steel channel 2-1/2″ x 1″ x 12 ga.; supplied with hook and rod coupling.
