The stainless steel rod is suitable for Gear shafts, motor shafts, short support shafts, shaft pocket models, model ships, model cars, etc. Features chrome plating and hardening for high surface hardness, wear and corrosion resistance, and low friction. Each set includes two linear shafts of identical specification, suitable for linear motion systems requiring parallel dual-shaft support. Both ends of the shaft are pre-drilled and tapped with internal threads (size corresponds to OD), facilitating axial fixation or end support mounting with screws. Available in four outer diameters: 8mm, 10mm, 12mm, 16mm, with lengths selectable from 100mm to 550mm.