About This Versatile: Use the DAYUAN Upgraded version Carburetor Synchronizer and Adjustment Tool Kit – Vacuum Gauge Set compatible with Gs Kz 550 650 750 to synchronize the values of 4 carburetors as well adjust them at the same time Synchronizer Gauges: Set includes 4 synchronizer gauges 1/2" with fixed plates (vacuums) each gauge has its own individual damping control and calibration control Set includes 4 x Pressure gauge Ø 92 mm 4 x Rubber house 8 x 5 x 750 mm 4 x Hose clamp with replacement washer 4 x Connection piece 53 mm; M6 x 0.75 mm 4 x Connection piece 60 mm;M6 x 1.0 mm 4 x Extension 3.9 x 52 mm 4 x Extension 3.9 x 122 mm This Fuel vacuum carburetor carbon synchronous instrument is made of high quality material. Each 2" gauge features 0-76cm/hg readings; shut off valve and all hardware is high grade chrome finish instead of brass for longer life better flow accuracy Convenient Storage: Heavy-duty blow-mold plastic carrying case for easy transport, storage, and organization Overview Brand : DAYUAN Material : high grade chrome, high quality material Item dimensions L x W x H : 17.72 x 11.81 x 3.94 inches Item Weight : 6.8 Pounds Number of Items : 1