XB-1

The XB-1 is the putter golf365.com describes as opening the Sizemore Collection in 2007, credited to designer Bruce Sizemore and built, per that reporting, around what the publication calls a Total Club Approach, the idea that head, shaft, and finish are engineered together rather than assembled from separate parts. The publication's account has the head in carbon steel with a 110 annealed, 99.9 percent pure copper insert, cross-milled in twenty-seven different directions and held, per golf365.com, to a tolerance of less than 1/1000 of an inch. The face carries what the outlet calls an IND-X process, a geometric pattern cut with exceptionally fine spacing.

Golf365.com's specifications list the XB-1 at 34.5 inches, 4 degrees of loft, and 71 degrees of lie, with a short, slightly offset half-hosel neck and a stainless steel shaft built with what the publication terms Tip-Stiff technology for added stability. The same reporting notes a 3-D optical alignment design and lists the putter as available in left and right handed models, shipping January 1, 2007 at an MSRP of 349.00 USD according to golf365.com.

Within the line, the record we hold treats the XB-1 as the model that carries Sizemore's stated design philosophy most fully, per golf365.com's account of the Total Body Approach, the copper insert and heavy cross-milling standing as the putter's most distinctive claims against whatever the rest of the Collection would go on to offer.