About our solder pastes, the differences and characteristics use: M11-lead-free low temperature solder paste 138°: Tips for use: It is suitable for mobile phone maintenance that cannot withstand high temperature (such as tin planting in the middle layer of X motherboard maintenance), reducing maintenance difficulty and risk. Features: low temperature of 138°, fine and sticky, no blistering of tin planting, uniform tin beads, reducing maintenance difficulty and risk, but the welding firmness is not as good as medium and high temperature. Specifications: M11 Material: solder paste colour: yellow Package Contents: 1 x Phone Microsoldering Repair 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.