Features: brand new and high quality Made of high-quality copper & stainless steel materials, practical and durable. We offer 4 kinds of coupler optional(G1/4 double nipple, G1/4 male, M14 male, G1/4-M14 double nipple), you can choose one or more according to your needs. High replacement couplers provide secure and quick fittings, easy to connect and disconnect. Max. Pressure is up to 5000 PSI. Two quick connectors connect water outlet of pump to pressure washer hose or connect pressure washer hose to gun. The other two quick connect kits converts 3/4'' threads to quick release fittings, connecting all 3/4" standard garden hose to water inlet of power washer pump. ATTENTION: M22 14 mm swivel fitting has 14 mm inside diameter, NOT 15mm. Specifications: Material: Copper & Stainless Steel Style A Size: approx 38mm/1.50 inches Style B Size: approx 31.5mm/1.24 inches Style C Size: approx 31.9mm/1.26 inches Style D Size: approx 40mm/1.57 inches Type: A/B/C/D/4pcs Style A: G1/4 double nipple Style B: G1/4 male Style C: M14 male Style D: G1/4-M14 double nipple Note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item. Package includes: 1x Pressure Washer Adapter