Pre-rinse Hose & Handle Specs: The size of this commercial-grade pre-rinse hose connector is 7/8”-20 NPT, and the blue handle thread size is 3/4”-14 UNF female outlet. Tip: Measure your faucet threads before purchasing to ensure a perfect fit.  Compatible with Commercial Faucets: The 45" stainless steel hose with a 21.3 inch stainless spring that retractable smoothly. Designed as replacement hardware for T&S wall-mount brass faucets or other commercial Kitchen sink faucets (common heights: 35"/44"/47").  Commercial-grade durability Stainless steel pre-rinse hose: 1. Outer layer - Flexible 304 stainless steel armor resists kinks and corrosion. 2. Inner core - Food-safe EPDM tubing resistant to high pressure. 3. Pre-rinse spring - Chrome-plated surface creates a mirror-like finish that repels water spots and mineral buildup.  Product function: The pre-rinse spring helps control the direction of the hose and focus the spray head automatically on the sink, making your washing work easier. At the same time, it prevents hose drag and damage at stress point.  High Quality Service: The package contains a 45" stainless steel hose with a blue handle, a 304 pre-rinse spring, two adapters and gaskets. If you have any questions, please contact us through your order and we will provide customer service within 24 hours.