Solidworks-premium-2020

: Integrated FEA (Finite Element Analysis) to validate stress, strain, and safety factors of parts and assemblies. Notable Features New to 2020

In , there is no single "long feature." Based on your query, you are likely looking for how to make a part longer or seeking a list of advanced features included in the Premium version. How to Make a Part Longer

: For surface models, use the Extend Surface tool found under Insert > Surface > Extend . You can choose to extend an edge tangentially or along the existing geometry.

: Dedicated tools for creating complex paths for pipes, tubes, and electrical cable harnesses.

: Double-click the feature in the FeatureManager Design Tree (e.g., an Extrude) and change the numerical value of its length.

The 2020 release specifically introduced several performance-focused features: Solidworks 2020 Review - DEVELOP3D

If you need to increase the length of a model, you can use these standard methods: