- The XS version of the Biomaster comes with an additional spare XT7 graphite spool. . . - Three ball bearings ensure smooth, lasting performance. . . - Aero wrap line lay with two-speed oscillation (an industry benchmark) provides flawless loading and casting, as past tournament records testify. . . - A massive crank arm with natural rose wood grip drives the cold forged gear. . . - The front drag clutch is among the smoothest in this price range.