Add the Kief Filter Screen to your DBT Model 0 and make sure that nothing is wasted. When you upgrade to the Kief Filter Screen, you essentially get two machines in one. After finishing your batch trim, simply switch out the DBT tumbler with the Kief Filter Screen tumbler and run the trim from your trim bin through it. Made out of medical-grade stainless steel, the 150-micron mesh screen leaves you with perfectly separated, customer-ready kief.