BCuP-2 phosphor copper welding rod composition: Phosphor (P): 7%, Copper (Cu): the remainder. Phosphorus copper electrode welding copper pipe without flux, phosphorus is a reducing agent, can reduce cuprous oxide, phosphorus oxide floating on the sur-face of the weld, phosphorus copper electrode fluidity is good, with self-brazing. Flux must be added when copper and iron pipes are welded. 710-810, low melting point, good fluidity, low cost, strong caulking. BCU93P copper brazing rods for copper hvac is used for brazing of copper & copper alloy in motors, air-conditioners, meters, and refrigeration industry, copper solder for jewelry copper phosphorus brazing rod. Also can braze some pipes, wire or the small copper braze job and the art project. Size:Flat:3x1.3x400mm (Width x Height x Length) Quantity:5 Sticks Color:As Shown Material:Copper Package Contents: 1set * brazing rods Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.