Features: Heavy duty straight tip makes filling tire hassle-free; the locking clip keeps the chuck attached to the stem during inflation. vanadium steel material single/double for head are designed for heavy-duty use with tire inflators and gauges. The closed flow design allows air to flow when the internal flow is open. Threads of the tire pump fit most air inflators. There are two types can be chosed: Single for Head Pump/Double for Head Pump. Specifications: Material:Vanadium Steel Dimension:Approx. 108x70x23mm/4.25x2.75x0.9inches Net Weight: Approx.72g Note: Please allow 1-2mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 x Single for Head Tire Pump/1x Double for Head Tire Pump Heavy duty straight tip makes filling tire hassle-free; the locking clip keeps the chuck attached to the stem during inflation. vanadium steel material single/double for head are designed for heavy-duty use with tire inflators and gauges. The closed flow design allows air to flow when the internal flow is open. Threads of the tire pump fit most air inflators. There are two types can be chosed: Single for Head Pump/Double for Head Pump.