【Description】 Alltooetools Coolant Vacuum Refill Kit Radiator Cooling System Vacuum Refilling Gauge Tool With 32mm 35mm 40mm 45mm Apdapters is designed for refilling radiators with coolant without introducing air pockets. Uses Shop Air to Evacuate and Leak Test an Auto&'s Cooling System. Reduces The Refill Time of Cooling Systems & Prevents The Air Flow Into The System. Easy to Connect With Air Pump & Creates a Vacuum to The Filler Hose. Opening The Valve & Letting The Pre-Mixed Coolant Flow Into The System. 【Applicable】 Complete with adaptors for most modern cars. 【Specification】 Material: Steel, Rubber Rubber Adapter Outer Diameter: 35mm, 40mm, 44mm 0 - 76 Cm/HG Vacuum Gauge Vacuum Generator Size: 117x55mm / 4.61"x2.17"(L*W) Air Source Diameter: 5mm/0.2"(ID), 8mm/0.31"(OD) Vent Diameter: 7mm/0.28"(ID), 11mm/0.43"(OD) Hose Length: 132cm / 51.97" Hose Diameter: 4mm/0.16"(ID), 6mm/0.24"(OD) Air Pressure Range: 80Psi-100Psi 【Includes】 1PC x Vacuum Generator 1PC x Vacuum Gauge 1PC x Coolant Hose 3PC x Rubber Adapters