Simpson Strong-Tie RFB#6X6-55 RFB 3/4 in. x 6 in. Zinc-Plated Retrofit Bolt, Grade 55 MULT 5 Self-Undercutting Technology: This innovative feature

Self-Undercutting Technology: This innovative feature eliminates expansion

and even hollow or grouted CMU

High-speed steel construction provides excellent wear resistance and strength

making it ideal for users of all skill levels

Simpson Strong-Tie RFB#6X6-55 RFB 3/4 in. x 6 in. Zinc-Plated Retrofit Bolt, Grade 55 MULT 5 Self-Undercutting Technology: This innovative featureSimpson Strong Tie RFB#6X6 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