American Shifter 10Mm X 1.25 To 16Mm X 1.5 Custom Shift Knob Adapter ASCAD15Product DetailsFactory Fit. American Shifter Companies adapter kits allow you to install your Custom Shift Knob with ease. Simply insert the correct adapter and screw onto your shift lever. Comes in 2 kits standard or metric. What's in the BoxTerms & ConditionsCovered by Manufacturer's Warranty |