The new SiSeries combines the proprietary and proven alignment benefits of SeeMore RifleScope Technology (RST) in a new line of putters featuring thermoplastic face inserts for a softer feel and a slightly lower rebound characteristic preferred by some players. Si1 is a modern deep flange blade design with center shaft, near face balanced, and is only available at this time with straight shaft. The Si1 features 5% toe hang, near face balanced.