Profile: Masons Supply Company offers building materials. Our product categories are forming & shoring systems, concrete forming & accessories, and concrete & masonry tools. Our concrete forming & accessories list comprises of vertical forming systems, horizontal forming & shoring systems, column forming, fasteners and concrete placing equipment. The R series concrete bucket has a double clamshell 16" diameter gate featuring the patented GarBro venturi throat. The gate is non-jamming, grout tight and self-closing. The bucket has attachments such as rubber accordion hopper, side chute, air operated gate system and extensions collar. The metal tub wheelbarrows are rugged wheelbarrows built for heavy duty use.