Simpson SBR/43-R680 Structural Spacer Bracers - G90 Galvanized, Pkg 680Model No. SBR 43 R680 Thickness (mil) 43 Ga. 18 L (in.) 50 3 4 Coating Material. Zinc Galvanized, G90 Packaging Qty. 680 The SBR provides bracing along the length of the stud, and for head of wall slip conditions for exterior, structural cold formed steel walls. This structural spacer bracer reduces the installed cost of cold formed steel stud walls by enabling faster stud layout with pre punched slots that minimize the need for bridging clips with on