Roller Block Assembly monitors_ORP This is a Parker TrueSeal

This is a Parker TrueSeal Union Elbow

This item is comparable to Hayward SP1023S

R-0009-A Sulfuric Acid

and 2 fasteners in the package

Roller Block Assembly monitors_ORP This is a Parker TrueSealThe Duraflex Complete Roller Block Assembly attaches to the Fulcrum Stand Box (Item DF SB401C) and holds the Footwheel and Roller. This is one complete assembly. Two are required per Fulcrum Assembly. The Roller Block is not sold separately. It includes the following items: (1) Slide Bearing (DF 518) (1) Roller Clamp (DF 521) (1) Roller Bearing (DF 524) (1) Rubber Bumper (DF 515) (1) Anti Rattle Clamp (DF 516) (1) Tie Plate Bolts, Washers and Nuts (DF