Ascaso Grind Adjustment Knob, I-Series (formerly Innova) This is the grind adjustment knob found on Ascaso's I-1, I-2, I-Mini and I-Steel grinders (the line previously sold under the Innova name), turning it rotates the burr carrier to dial grind size finer or coarser. SPECIFICATIONS 26.5 mm diameter x 17 mm thick, 6 x 5 mm mounting hole Ascaso part #: MI...4 (11071041) COMPATIBILITY Fits: Ascaso I-1, I-2, I-Mini and I-Steel grinders, including earlier units badged "Innova" INSTALLATION Simple DIY swap, unthreads from the adjustment collar by hand. PRO TIPS If your grind setting drifts on its own during use, check that this knob is tightened fully down onto the adjustment collar, a loose knob is a far more common cause of "wandering" grind size than worn burrs on these grinders.