Drop the hex adapter and upgrade for more nicer look. 
Semi Truck Gear Shift Adapter 1/2 13 Stainless Chrome Roadway Style.

• Stainless Steel Chrome plated
• Weight 3.7oz Beefy solid adapter.
• Size 2inches tall almost .9 inches wide. 
• Thread 1/2 13 female to female. 

****Check out our other semi truck shift knob adapters and knobs as well. ****