Description: -Replacement stock spindle shaft with this strong steel spindle shaft precisely grounded for prefect alignment. Includes: -Steel spindle shaft -Two brass washers -Two hex bolts. Requires: -N/A. Weight: 2.1 grams Usage: -For Blade 400/3D helicopters Features: -Strong hardened steel spindle shafts reducing chance of bending spindle shafts -High quality washers and screws included -Precision grounded to fit perfectly on bearings