These Grenades can be used for Knobs, Encoders and Portables. They fit 6mm D style post, Use them as a Pointer knob the pin is degreed to your order and points to the 12 o clock position on you gear. They also make perfect Encoders! All products use our patented sleeve for a perfect fit. These product’s are built to order and come with knob lifters tools. Material Billet Aluminum.