Break Up Clumps For Better Espresso Even the best beans can produce disappointing espresso if your coffee bed is uneven. Clumps and pockets in your grounds create weak spots during extraction, leading to channeling, spurting, bitterness, and inconsistent flavor in the cup. The Crema WDT Tool helps you prep a smoother, more even coffee bed before tamping by breaking up clumps and evenly distributing your grounds throughout the portafilter. The result? More balanced extractions, improved consistency, and espresso that tastes the way it was meant to. Whether you're dialing in your morning shot or chasing café-level espresso at home, proper puck prep makes all the difference. See our Product Compatibility Guide for a complete list of product / machine sizing and compatibility. Need replacement pins? Find them here!