27pcs stencils are as follows: 1pc 1 universal stencil (P=1.5mm) 48mm48mm 1pc 0.25 universal stencil (P=0.5mm) 35mm35mm 2pcs 0.30 universal stencil (P=0.5mm) 30mm30mm, 35mm35mm 2pcs 0.35 universal stencil (P=0.6mm) 30mm30mm, 35mm35mm 1pc 0.40 universal stencil (P=0.78mm) 35mm35mm 1pc 0.45 universal stencil (P=0.78mm) 35mm35mm 3pcs 0.5 universal stencil (P=0.8mm) 31mm31mm, 35mm35mm, 0mm40mm 1pc 0.55 universal stencil (P=1.0mm) 50mm50mm 1pc 0.6 universal stencil (P=0.9mm) 45mm45mm 1pc 0.6 universal stencil (P=1.1mm) 32mm32mm 6pcs 0.6 universal stencil (P=1.0mm) 24mm24mm, 27mm27mm, 30mm30mm, 33mm33mm, 41mm41mm, 45mm45mm 1pc 0.65 universal stencil (P=1.1mm) 47mm47mm 6pcs 0.76 universal stencil (P=1.27mm) 30mm30mm, 33mm33mm, 34mm34mm, 37mm37mm, 41mm41mm, 55mm55mm Universal direct heat BGA stencils for notebooks, desktops, for XBOX, North and communications motherboards and other graphics cards and other types of BGA chip Features: Made of imported stainless steel plate. Good stencil thickness. Can be directly heated by air gun, steel mesh is not easy to deformation by heat. Each set of 27 pieces. Basically covers the current common BGA chip. Steel mesh area and BGA chip area matching, can reduce the waste of solder ball. But for chip that solder balls uneven arranged or has different distance, please consider buying. Note: Better solder ball has normal content of tin and silver. Melting point is normal. Direct heat with air gun, adjust the air gun temperature. No need too high temperature, otherwise cause deformation. Package includes: (Without retail package) 27 x Universal Stencils