500K Dual Push 18 Tooth Coarse Spline Shaft for Metric Knob Allows wiring modifications such as coil swapping, tapping, and phase shifting Color: Silver Material: Metal Size: 18mm Package Contents: 6pcs x Potentiometers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.