This Casement Window Crank Handle features 3/8 inch bore. It has a smooth 360-degree handle to help you open and close the window easily, depending on your needs.Window Crank Handle Replacement Only a Phillips screwdriver is required for easy installation. The 3/8 "bore hole is firmly in place with the supplied screws.This Casement Window Crank Handle can be use on 3/8 inch spindles only, (Fits most Operating handle for Andersen casement windows).High quality zinc material is used.The Casement Window Crank Handle