1/4", 3/8" & 3/16", 5/16" Ratchet Wrench HVAC Port Valve/Refrigerator ToolDescription:1. Square Ratchet Wrench (4 sizes in 1) 1/4", 3/8" & 3/16", 5/16" HVAC Valve Port/Refrigerator Tool2. Ideal for opening and closing square head port valve stems in refrigeration systems.3. Flip back. Specially designed for use in HVAC access valves in hard-to-reach areas4. Specially designed for use on compressors with access valves in hard-to-reach places. HVAC service tech special hand tool. Specifications:Type: Straight/CurvedColor: SilverMaterial: High Carbon Steel4 Square Sizes: 3/16, 1/4, 5/16 & 3/8 inchLength: 140mm/5.5inchWidth A: 20mm/0.8"Width B: 23mm/0.9"Thickness: 13.5mm/0.5inPackage Contents:1x Ratchet WrenchNote:1. Please allow 1-3mm error due to manual measurement. Pls make sure you do not mind before bidding.2. The color may have different, as the difference display, pls understand.