Turbotorch 0386-1298 T503 Replacement Tip for TX503Part # 0386-1298Replacement Tip for Turbotorch T503 Extreme torch. Turbotorch 0386-1298 Specifications: Propane: soft solders 3/4"-3" and silver brazes 1/4"-1" MAPP: Soft solders 3/4"-4" and silver brazes 1/4"-1-1/4"