Ping TiSI Tec Fairway. Like the Ping TiSI Tec driver, the Ping TiSI Tec Fairway Woods utilise Ping's Chemical Milling Technology to remove the alpha layer from the casting and precisely control clubhead wall thickness. These woods also feature trapezoid-shaped weight pads cast onto the zirconium soleplate (a "sister" metal that is 50 percent heavier than titanium) and a tungsten bottom weight. This technology and choice of materials allows Ping engineers to incorporate progressive weight pad placement into the design and fine-tune the spin and lift characteristics of the golf ball based on the loft of the wood. Since maximum distance is required from the 3-wood, the weight pads are positioned toward the face to reduce spin and maximize roll. For a higher trajectory and softer landing, the weight pads in the 7-wood are positioned away from the clubface in the back of the wood. For optimum lift and spin, the weight pads in the 5-wood are located approximately in the centre of the soleplate.