Simpson Strong-Tie RFB#4X4-55 RFB 1/2 in. x 4 in. Zinc-Plated Retrofit Bolt, Grade 55 Type:Other Top-Quality Material: Made from durable

Top-Quality Material: Made from durable A2 steel for enhanced longevity and performance

Superior Material: Crafted from super-strength steel for long-lasting durability

- Helps achieve repeatable thickness and surface quality

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Simpson Strong-Tie RFB#4X4-55 RFB 1/2 in. x 4 in. Zinc-Plated Retrofit Bolt, Grade 55 Type:Other Top-Quality Material: Made from durableSimpson Strong Tie RFB#4X4 55 The Simpson Strong Tie RFB retrofit bolt is a precut threaded rod, supplied with nut and washer, to use with anchoring adhesives to anchor into existing concrete and masonry. Each end of the threaded rod is stamped with rod length in inches and color coded indicating the grade or type of steel for quick and easy identification post installation. For 1 2 in. diameters and larger, the distinctive No Equal symbol is also