LIVRE 11855 Power Arm 98 + TB1 Black Limited PWA98T-SL182-BKLD for Shimano 18000-20000 Left Handle

While the M1-V knob and Bullet knob were made from aluminum alloy, the newly developed TB-1 knob uses titanium for ultimate lightness. The titanium part (excluding the bar) weighs just 37.1g. When immersed in water, it floats effortlessly.