The CenturionPro DBT3 Accessory Kief Tumbler is a specialized attachment designed to work with the DBT3 trimming machine. As a "SPECIAL ORDER ITEM," it signifies a premium or customized accessory, likely built to order based on specific customer needs. This kief tumbler is designed to collect the valuable kief, the powdery resin glands, that are separated during the trimming process... https://www.hydroponicstown.com/777138-accs-kief-centuriopro-dbt3-accessory-kief-tumbler-special-order-item