Studio Ocean Mark FG Knot ToolStruggling tying your FG Knots? Look no further than the Studio Ocean Mark OK105H. This tool comes with large rubber grommets for holding the braided main line steady while tying your weaves, a ring hook for attaching the tool to a surface for handsfree tension, and a buckle and strap for easy storage.About Studio Ocean Mark-In 2002, Takashi Otsuka established Studio Ocean Mark after leaving the fishing department for Ryobi. Otsuka chose to locate his factory in the Ota Ward of Tokyo City for its community of high-quality engineers and renowned metal shops. Studio Ocean Mark designs and manufactures fishing reels and tackle with passion, precision, and innovation in order to meet the needs of serious anglers worldwide.