excerpt: "Extend a 2-dimensional sketch through a third dimension in order to create new 3-dimensional volume, or if extruded into an existing volume, cut into an existing solid."
Extend a 2-dimensional sketch through a third dimension in order to create new 3-dimensional volume, or if extruded into an existing volume, cut into an existing solid.
| `symmetric` | [`bool`](/docs/kcl-std/types/std-types-bool) | If true, the extrusion will happen symmetrically around the sketch. Otherwise, the extrusion will happen on only one side of the sketch. | No |
| `bidirectionalLength` | [`number(Length)`](/docs/kcl-std/types/std-types-number) | If specified, will also extrude in the opposite direction to 'distance' to the specified distance. If 'symmetric' is true, this value is ignored. | No |
| `tagStart` | [`TagDecl`](/docs/kcl-std/types/std-types-TagDecl) | A named tag for the face at the start of the extrusion, i.e. the original sketch. | No |
| `tagEnd` | [`TagDecl`](/docs/kcl-std/types/std-types-TagDecl) | A named tag for the face at the end of the extrusion, i.e. the new face created by extruding the original sketch. | No |
| `twistAngle` | [`number(Angle)`](/docs/kcl-std/types/std-types-number) | If given, the sketch will be twisted around this angle while being extruded. | No |
| `twistAngleStep` | [`number(Angle)`](/docs/kcl-std/types/std-types-number) | The size of each intermediate angle as the sketch twists around. Must be between 4 and 90 degrees. Only used if `twistAngle` is given, defaults to 15 degrees. | No |
| `twistCenter` | [`Point2d`](/docs/kcl-std/types/std-types-Point2d) | The center around which the sketch will be twisted. Relative to the sketch's center. Only used if `twistAngle` is given, defaults to [0, 0] i.e. sketch's center. | No |
