Detacher

Description
Detacher: Use these to drop missiles, a mini aircraft, or create an ejection seat for last-second bailouts. Select a detacher and click the part options icon to change which group it is assigned to.

Properties
The delay can be set from 0s to 5s. The detach force can be set from 0% to 100%.

Practical Uses
It can be used in place of pylons.