Feature: 1. Scope of Application: With a 4mm diameter, these motor shafts are suitable for brushless motor of model aircraft, RC car, boat, etc. 2. Stainless Steel Material: Made of stainless steel, these motor shafts are high temperature resistance, which greatly improves the life span. 3. Fine Workmanship: These motor shafts are well made with flat and glossy appearance, and they are not fade easily. 4. Easy to Install: Comes with a compact size and a light weight as well, the easy installation can be quickly completed. 5. 10Pcs: There are 10 pieces motor shafts in the package that suitable for long term use and make replacements. Specification: Item Type: RC Motor Shaft Material: Stainless Steel Color: Silver Length: Approx. 55mm / 2.2in Diameter: Approx. 4mm / 0.2in Applicable: Model Aircraft, Remote Control Car, Boat. Package List: 10 x RC Motor Shaft