Simpson 1-3/8" Hole-Cleaning Wire Brush Head for SET-3G (ETB137S) PACK:25 Pk The GCT assembly combines a

The GCT assembly combines a preassembled zip-tie holder with a 1" smooth-shank fastener

The GWL-100 easily snaps onto the magnetic ring (G-422 or GMR-2) on the nosepiece of the tool

Quick-Install Design: Engineered for efficient

providing additional bearing surface area

Simpson 1-3/8" Hole-Cleaning Wire Brush Head for SET-3G (ETB137S) PACK:25 Pk The GCT assembly combines aSimpson ETB137S ETBS 1 3 8 in. Wire Hole Cleaning Brush Head is a Simpson Strong Tie wire brush head engineered for cleaning drilled holes prior to adhesive anchor installation. Designed specifically for use with Simpson Strong Tie SET 3G and AT 3G adhesives, this brush enables proper hole cleaning with fewer brush strokes at embedments up to 20 times the anchor diameter, helping ensure optimal adhesive performance and anchor holding strength. Key