This set of Dupont connectors consistst of the following items
This should be sufficient to hook up a printer using a RAMPS board with any combination of sensors and motors.
4 pin connectors are for the motors, 2 pin are for thermisters, 2 or 3 pin are for limit switches.
They can be crimped with a fine pair of needle nosed pliers with a little care or for best results use a proper crimp tool.
We have a suitable tool in our tools section. (Check related products)