... approval Hardware Products Type A and M ER Nut With G6.3 Dynamic BalancingMaterial: SNCM-220 steel, with high aseismicity. ... molding processing, ensure precision, thread tolerance is 4H.Feature: With G6.3 dynamic balancing, suitable for rpm10,000, and with patent ... nut: type UM/RD, type KM/RD.Other products: carbide end mill, carbide inserts, carbide rod, tool holder, tool heads, chuck, collet, spanner ...