Sometimes you need to pinch (or grip) something remotely, and this Actobotics unit the solid and inexpensive mechanical part to your solution. Sub-micro sized!
Actobotics has engineered a nice set of micro grippers for robotic uses, which are robust and inexpensive. Mate this with a sub-micro zie Hitec-style servo, and you're ready to mount it on a 0.77" hole pattern (common on many Actobotics parts, but you can still mount it to your own devices).
Note: This kit does NOT include a servo.