Dimensions: 4.4″ x 5.1″ x 5.3″. Aluminum alloy body. Steel clamps. Comes with: Body; Abrasive holder; (3) diamond plates (Extra Coarse, Medium, Fine); (5) Alcohol wipes; Permanent marker; 2mm clamps screwdriver; Spare parts (bumpers, screws, Allen wrench). Sharpening angle is constant all along the edge. Rotary mechanism is calibrated from production. Rotary mechanism that allows you to flip the clamped knife over without unclamping. Stepless angle setup. Easy installation. Universal abrasive holder. Boxed.