Joint Push Pull Sketchup 2021 [best] -

The flagship tool. It pushes multiple faces along their average normals, keeping them connected. Perfect for thickening a curved wall or a car hood.

: The official repository for the plugin where you can find version history, compatibility notes for SketchUp 2021, and the latest releases (e.g., v4.7). SketchUp Community Key Capabilities for SketchUp 2021 Joint Push Pull Sketchup 2021