Cartridge-N600CompatibilityFor MOKO 560/520 Series and other MDK Standard head Handpieces Compatible with NSK® X600L Handpiece SpecificationsHigh performance German-made bearings Durable Carbide made guide borer Accurately Balanced by high-end balancing equipment Technical Data Dimensional accuracy: 0.002 mm Run-out accuracy: 0.006 mm Accuracy of the bur borer: 0.002 mm Chuck system extracting force: ≥30N Push button opening force: ≤45N