Giddings 1.25 GW Helios
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Reference Notes
The Giddings 1.25 GW Helios is a medium-deep-cup Bb trumpet mouthpiece featuring a 17.09mm rim diameter and 3.86mm throat and 24 drill. It has a symphonic backbore, standard shank, stainless-steel construction. Well-suited for orchestral and classical playing. Use these measurements as a comparison starting point: fit and response still depend on the player, dental structure, instrument receiver, and each manufacturer's measuring method.