CRL Beaded Rigid Lower Division Bars for GM 1953-1963 are OEM quality and will provide you with the best results when replacing or repairing damaged or missing channels in older vehicles. The Stainless Steel bead provides that OEM look to all applications and enhances the installation. All rigid channels have an internal steel core that is covered by a protective rubber coating for long life. Pile and/or felt linings protect the glass and provide maximum glass cushioning that reduces road noise and allows the glass to operate smoothly. Although CRL states the original applications for these channels, by using the measurements shown you can use these channels on numerous other vehicles.