• For testing fuel pump carburetor and transmission check auto with 2~4pcs carburetors. • Contents: 4pcs 3-1/2" synchronizer gauges with fixed plate. 4pcs rubber hose 8 x 5 x 750mm 4pcs extension tube 3.9 x 52mm 4pcs extension tube 3.9 x 122mm 8pcs cone type connector 8 x 40mm 4pcs adapters 10 x 53mm(M6 x 0.75) 4pcs adapters 10 x 60mm(M6 x 1.0)