Features: 1. HEAVY DUTY BRASS CONSTRUCTION of tire chucks with locking on make the tire air chucks durable and Reliable. 2. INTER SCREW TIRE CHUCK - including 2 packs Twist-on chuck(thread on) in 1 package. Twist-on chuck can tightly hold the tire valve of bicycles,motorcycles,cars, buses and trucks. 3.TIRE INFLATOR CHUCKS with thread can make it bite on the tire valve stem tightly when inflating 4.UNIVERSAL CONNECT TYPE ,1/4-Inch Female NPT, 3/4-Inch Hex, Fits Standard 1/4" NPT Fittings;locking on tire chuck Specification: 1. Item Type: Tire Air Chuck for bicycles,motorcycles,cars,buses, trucks and so on. 2. Special Features: Heavy-Duty,Large Bore,two Open Flow Through(twist-on chuck). Brass construction allows for strength and durability 3. Material: Environmental friendly Brass 4. Color: Golden 5. Size: 45x16mm 6. Open or Closed Design: Open (Flow Through) 7. Function & Feature: Twist-on tire valve for inflator and pressure gauge 8. Thread:1/4"NPT Female, 3/4-Inch Hex, Fits Standard 1/4" NPT Fittings,Wildly use range of professional pneumatic tools Package includes（without retail package）: 1 × Tire Air Chuck Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. High-quality product,each process is strictly implemented in accordance with process standards. Perfect price-performance ratio, save you more money. We will ship it ASAP,when you place the order. If you have any questions, please feel free to contact us, we will solve it for you. Tire Heavy Duty Screw on Tire air chucks for Tire Inflator Gauge.