Is this thing supposed to come out of the box all sticky?

Mine also came out of the box sticky. This did not feel like a sticky residue from an oil. The box also had the brand Hiltex on it even though the contents match the picture shown by Amazon.

What size coupler will I need to connect it to my hose?

It uses the "standard" 1/4" coupler. For convenience, I recommend using quick disconnect couplers on your hoses, tools and accessories. Although a bit expensive, they make changes much faster and safer.

What is the "right" and/or "safe" oerating pressure for cleaning small shoe box size precision pumps?

I would not go over 20psi as there are very small diaphragms. You might start at 10psi first I do not know the type of pump you have but start small and see if that removes any debris. Hope this helps?

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NEIKO 31121A High Flow Air Blow Gun | 3 Pc Pneumatic Air Nozzle | Dust Gun | Compressor Accessories | ¼”

Product ID: 331662895

Details

Brand
Neiko
Exterior finish
Aluminum
Inlet connection size
0.25 Inches
Material
High Speed
Outlet connection type
MNPT

🎯Precision air control trigger

💨232 PSI max air pressure

🛠️Durable aluminum & rubber grip

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$45.84

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Description

💨 Clean smarter, not harder — unleash precision airflow power!

BUILT TO LAST - Rugged aluminum body with rubberized grip ensures durability and comfort during extended use.
VERSATILE NOZZLE SET - Includes long needle, 2-inch rod, and round nozzles for every hard-to-reach spot.
COMPACT PORTABLE DESIGN - Fits comfortably in your palm for easy handling on the go or in tight spaces.
ERGONOMIC PRECISION CONTROL - Oversized thumb trigger lets you modulate airflow exactly where you need it.
POWERFUL HIGH FLOW PERFORMANCE - Blast away dust and debris effortlessly with up to 232 PSI max pressure.

The Neiko 31121A High Flow Air Blow Gun delivers professional-grade cleaning with a max pressure of 232 PSI and a working pressure of 90 PSI. Its ergonomic design features a durable aluminum frame and rubberized grip, paired with an oversized thumb trigger for precise airflow control. This compact tool includes three specialized nozzles—long needle, 2-inch rod, and round—making it perfect for clearing dust, debris, and liquids from even the toughest-to-reach areas. Ideal for professionals seeking efficient, portable compressor accessories.

Specifications

ASIN	B07KY1TQYG
ASIN	B07KY1TQYG
Brand Name	Neiko
Country of Publication	China
Country of origin	China
Customer Reviews	4.6 4.6 out of 5 stars (930)
Customer reviews	4.6 4.6 out of 5 stars (930)
Date First Available	21 December 2018
Exterior Finish	Aluminum, Rubberized
Included Components	Air Blow Gun
Inlet Connection Size	0.25 Inches
Item Type Name	High Flow Air Blow Gun \| 3 Pc Pneumatic Air Nozzle \| Dust Gun \| Air Gun Compressor Accessories \| ¼”
Item Weight	0.01 Ounces
Item model number	31121A
Manufacturer	Neiko
Manufacturer	Neiko
Manufacturer Part Number	31121A
Material Type	High Speed Steel
Maximum Pressure	232 Pound per Square Inch
Model Number	31121A
Number of Pieces	4
Number of Ports	4
Outlet Connection Size	0.25 Inches
Outlet Connection Type	MNPT
Package Dimensions	21.41 x 20.29 x 2.79 cm; 0.28 g
Set Name	3 Pc Pneumatic Air Nozzle Set
Size	5" Backing Pad
Thread Size	1/4 inch
Thread Type	1/4 Inch Npt
UPC	816914022751
Unit Count	1 Count
Valve Type	Air Control Valve

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