The Si2 RST Hosel blade is a solid stainless steel blade with a new milled aluminum insert for great feel and roll. Featuring SeeMore’s Revolutionary new RST Hosel Plumber Neck Design. SeeMore’s new RifleScope Technology (RST) Plumber Neck Hosel, simplified to “RST Hosel,” is a 100% USA Machine Milled fluted barrel hosel that brings a unique approach to the classic offset plumber neck design. It enables golfers who want their hands slightly forward, and love the precise look of a classic plumber neck hosel, to take advantage of SeeMore’s patented and proven RST alignment system. By hiding the red dot, and lining up the white lines, using the lower portion of the new RST Hosel, golfers now have an exciting new option within the SeeMore lineup. The RST Hosel enters the head on a single plane angle, at 70 degrees, and the design offers an entry point of connection closer to the sweet spot than a standard plumber neck. This leads to improved feel and balance, and a more fundamentally sound stroke, as well as offering the precision alignment benefits of RifleScope Technology. The Si2 RST Hosel blade is a classic heel and toe weighted blade for the player who wants a great looking, forgiving blade, instilling a ton of confidence at address. The black matte finish highlights SeeMore’s patented and proven alignment system. Offset plumber neck design. 25 degree toe hang. All SeeMore Putter Models Have SeeMore's Patented RifleScope Technology (RST) Alignment System, For A True Reference Point For Perfect Alignment And Set Up On Every Putt. SeeMore was the winning putter brand of the 2015 OPEN Championship at St. Andrews (Zach Johnson), in one of the greatest clutch putting performances in OPEN History. SeeMore putters have won 3 MAJOR Championships, also including the 2007 Masters (Zach Johnson) and the 1999 US Open (Payne Stewart).