The smooth plastic wands are for controlling blinds tilt. The plastic wand, also known as a control rod, connects to the wand tilt mechanism with a standard wand tip. Moreover, these plastic wands with integrated eyelet tips are for use with horizontal blinds. The wands connect to most open hooked tilt mechanisms. Most wands are approximately 2/3 of the length of the blind as it sits in the window. If greater length is needed for operation, you can choose the appropriate length.