Dual Ratio 7/16 Copper Tubing Posted On: March 15, 2014 $14.00 Categories: All Products, Dual Ratio, Frame & Suspension Description Additional information Description Dual ratio copper tubing. 14 feet per car 1 @39 (Supercharged 1@33-1/4), 2 @16, 2 @48 Additional information Unit Price $14.00 Per Foot Year 1934, 1935, 1936 Part Number 2s70x Cylinder 6, 8