Drawtube:
1.5" travel standard drawtube 1.75" travel standard drawtube 2" travel standard drawtube 2.37" travel standard drawtube 2.75" travel standard drawtube 1.5" travel w/3 mini set screws 1.5" travel Comp ring drawtube 1.75" travel Comp ring drawtube 2" travel Comp ring drawtube 2.37" travel Comp ring drawtube 2.75" travel Comp ring drawtube 1.5" travel low position Comp ring 2" travel standard- filter swing ( add $100 ) 2" travel com ring- filter swing ( add $100 )

Color:
MoonLite Red ( Standard ) Black Blue Green Violet Gold

Knob/Motor:
1" knob Single Rate (Standard) 1.2" Dual Rate Tri-knob ( add $100 ) 1.2" Dual Rate Tri-knob w/Shaft Lock ( add $125 ) DC Motor with Rigel hand controller (add $150) High Res Stepper Motor- Stand Alone ( add $190 ) High Res Stepper Motor w / MoonLite Mini Controller ( add $385 ) High Res Stepper Motor w / MoonLite Display Controller ( add $685 )