This Is An Adjustable Locking Cup Holder Adapter Made To Fit Larger Water Bottles In Smaller Cup Holders. Simply Put Into Cup Holder You Want To Use It In And Use The 3d Printable Tool To Lock It Down. Turning The Tool 2.5 Times Will Max Out The Expanding Legs. Recommended To Use PETG or Really ABS or ASA If You Live In A Hot Climate Where Cars Can Reach Over 200 Degrees. After Printing Use Flat Head To Gently Loosen The Legs And Then Push In Slightly On The Button On The Bottom To Loosen Everything Up. Then Use Tool Or 6mm Hex To Tighten The Screw In And Out 2.5 Turns In Both Directions And You're Ready To Use.

Update: V10 Is For Loose Tolerance If Your Printer Is Not Dialed In V18 Is For Tight Tolerance If You Have A Good Printer Like Bambu And Want Good Results