The H 4106 Casement Window Crank Handle from Prime-Line has a smooth 360-degree operation that allows you to easily open and close windows as needed. It features durable, diecast construction with a white finish, as well as easy installation. A Phillips head screwdriver is required for the easy slip-on installation. The 3/8-inch bore is held firmly in place with the supplied set screw. The Prime-Line Casement Crank Handle can be used on 3/8-inch spindles, including on most older Anderson casement operators. Please check measurements before ordering. We specialize in repair and replacement hardware products for your home. Prime-Line's commitment to quality results in repairs which look as good as the initial install, making us the go-to solution for our loyal customers.