About these itemsRefrigerant Compatibility: All products are suitable for non - flammable refrigerants like R134a, R22, and R410a, making them useful for automotive AC, HVAC, and refrigeration work.Vacuum Pump Performance: Feature high - torque motors. The VP135 has a 4 CFM single - stage pump with 1/3 HP power, the VP125 in one version has a 3.5 CFM flow rate with 1/4 HP power, and the other VP125 (with chamber) also has 3.5 CFM and 1/4 HP. All achieve an ultimate vacuum of 5 Pa.User - Friendly Features: Have features like visible oil windows for easy oil - level monitoring. Some come with additional accessories like bottles of vacuum oil. They also have ergonomic designs for easy handling.Connection and Compatibility: Offer secure connections. The VP135 has color - coded hoses, and the VP125 models have multiple port types (1/4"" SAE and 1/2"" ACME) for compatibility with different systems.Application Range: Ideal for a variety of applications. The VP135 is for automotive and industrial uses, the VP125 for HVAC and refrigeration, and the VP125 with the chamber for degassing in lab, food packaging, and resin - related work.Key DifferencesVP135: Item Model Number VP135, 4 CFM free air displacement, 1/3 HP power, comes with a comprehensive kit including a manifold gauge set, hoses, adapters, a leak detector, and a carry bag. Net weight is 16.54 lbs.VP125 (basic): Item Model Number VP125, 3.5 CFM free air displacement, 1/4 HP power, a more basic package with just the vacuum pump, an oil bottle, and a user manual. Net weight is 12.69 lbs.VP125 (with chamber): Item Model Number VP125, 3.5 CFM free air displacement, 1/4 HP power, includes a 3 - gallon stainless - steel vacuum chamber with a tempered glass lid, a vacuum gauge set, and other accessories. Net weight is 23.05 lbs.Specifications Item Model Number: VP135Power: 1/3 HPFree Air Displacement: 4 CFMUltimate Vacuum: 5 PaIntake Fitting: 1/4""SAEOil Capacity: 0.27 qt./260 mlCompatible Refrigerants: R134a, R22, R410a, and other non - flammable refrigerantsItem Dimensions (L x W x H): 11.02 x 4.92 x 8.86 in/280 x 125 x 225 mmNet Weight: 16.54 lbs/7.5 kgItem Model Number: VP125Power: 1/4 HPFree Air Displacement: 3.5 CFMUltimate Vacuum: 5 PaIntake Fitting: 1/2""ACME & 1/4""SAEOil Capacity: 0.27 qt./260 mlCompatible Refrigerants: R134a, R22, R410a, and other non - flammable refrigerantsItem Dimensions (L x W x H): 10.83 x 4.72 x 8.86 in/275 x 120 x 225 mmNet Weight: 12.69 lbs/5.75 kgItem Model Number: VP125Power: 1/4 HPFree Air Displacement: 3.5 CFMUltimate Vacuum: 5 PaIntake Fitting: 1/4""SAEOil Capacity: 0.27 qt./260 mlVacuum Chamber Capacity: 3 Gallons/11.36 LitersPump Dimensions (L x W x H): 11.02 x 4.92 x 8.86 in/280 x 125 x 225 mmNet Weight: 23.05 lbs/10.45 kgPackage Content VP1351 x Vacuum Pump1 x Manifold Gauge Set1 x Set of Three - Color Hose1 x R410a Adapter1 x Set of R134a Quick Couplers1 x 1/4"" SAE to 1/2"" ACME Adapter1 x R134a Can Tap1 x 330 ml Oil Bottle1 x Leak Detector1 x Carry Bag1 x User ManualVP125 - basic1 x Vacuum Pump1 x 330ml Oil Bottle1 x User ManualVP125 - with chamber1 x Vacuum Pump1 x 3 Gallon Vacuum Chamber1 x Tempered Glass Chamber Lid1 x Vacuum Gauge1 x Vacuum Gauge Ball Valve1 x Vacuum Gauge Intake Filter1 x Connection Hose1 x Silicone Pad1 x 330 ml Oil Bottle1 x Wrench1 x User Manual