Monster Oil Lube Master Clocker Trumpet Mouthpiece ●About the Lube Master Clocker series: "If the marking is not in this position, it won't work properly." I think every brass player has heard this line at least once. I've always wondered why this is. And I came up with one hypothesis. "The mouthpiece has small bumps and grooves, and the point at which it sounds best may vary depending on the player's embouchure and breath direction." I quickly made some prototypes. The worst. Turn. The worst. Turn. Then, out of nowhere, the most amazing sound I had ever experienced rang out. It has been proven that each player has their own unique sweet spot. We like to tinker with things but they never see the light of day. But this time we were able to release something truly amazing. It is named "Clocker" because inserting the mouthpiece into the receiver and turning it resembles a clock.・Three Clocker It has the exact same specs as the Lube Master Three, but with holes.・Three For users of 1-1/4C to 3C. The origin and the pinnacle. Truly all genres. *As this is an imported product, there may be minor scratches or rough surfaces that occurred during manufacturing when it arrived. Also, the packaging may have scratches or stains. Please be aware of this.