QJt hrdwr kt, Q-Jet hardware kit, Bolt Kit #1925 for All QuadraJets Except Part #1905, Edelbrock Q-Jet hardware installation bolt kit. Comes with four 5/16" bolts to install a quadrajet carburetor., The Edelbrock #1925 Q-Jet hardware installation bolt kit comes with four 5/16" bolts needed to install a Quadra jet carburetor., Bolt Kit.