Dual Ratio Hose Clamp 7s4 Posted On: March 15, 2014 $10.00 Categories: All Products, Clamp & Clip, Dual Ratio Description Additional information Description For rubber vacuum hose to 7/16″ copper line. 8 per car. Additional information Unit Price $10.00 Per Each Year 1934, 1935, 1936 Part Number 7S4 Cylinder 6, 8