1. Perfect Compatibility: This 51mm portafilter handle fits KF6001 KF700. Please check compatibility before purchasing. 2. Barista Training Partner: The design helps observe the flow column, flow rate, color, flow column streaks, etc., better assessing extraction uniformity for a more exquisite brew. 3. Coffee extracted with this handle has more oils and better quality, allowing you to enjoy the glistening golden-brown coffee column immersed in the espresso's beauty. 4. Rosewood handle is designed with a comfortable ABS grip for stable operation. The detachable design is convenient and quick to disassemble, easy to use. Color: Black + Silver. Material: ABS + Metal. Size: 51mm. Package Contents: 1 x Coffee Handle, 2 x Filters. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.