Ryohei Handmade Forged Putter (Flow Neck)

The Flow Neck is one edition within the Ryohei Handmade Forged Putter line, and per fujimoto-golf.com, as reported by that publication, it's built with a flow neck rather than the alternative neck configurations the line may offer elsewhere. That same source describes the putter as forged, bent, ground and polished by a single man, a manufacturing process that, if accurate, would place the entire head through one set of hands from raw steel to finished product.

The steel itself is reported by fujimoto-golf.com as the same material used in the maker's irons, and the heat treatment is described as annealing for 72 hours using a tempered straw ash barrel. The technique is named Hizukuri in that same reporting. None of these claims carry verification beyond the one publication cited, so the numbers and process details here should be read as that outlet's account rather than an established record.

Within the line, the Flow Neck edition is distinguished chiefly by its neck type, per that same source. What separates it from other necks in the Ryohei catalog, or what that difference means for lie, loft, or face angle at address, is not part of what's held here.