This handle socket spring is a replacement for the pivot mechanism on Hoover uprights, fitting Model 63, Model 64, Model 91, and Model 918. The spring sits in the handle socket and connects the upper handle to the vacuum body, letting the handle recline and lock smoothly.As the spring weakens or breaks, the handle can wobble, fail to hold its position, or work loose from the body during use. A fresh socket spring restores firm tension and a steady, properly seated handle. Fits: Hoover Model 63, 64, 91, 918 Part: handle socket spring Function: connects the upper handle to the body for smooth pivoting Tip: inspect the socket for wear while the spring is out The spring seats in the handle socket during reassembly for a straightforward repair. Confirm your Hoover model before ordering so the spring tensions the handle correctly.