Why doesn’t the can tap fit the R-134a sealing can?

I used with zero r134a can not self sealing. Worked perfect. I looked up self sealing can and they use a 1/2 connecting instead of 1/4. This is 1/4 connect to piercing tool. I'm not sure if this piercing part will work with self sealing can by adding an adapter as it is not real long. They do make a piercing fitting for the self sealing can that will fit to the yellow hose. Then gauges will work OK. Guess need to send orion motor tech a email to say need an another adapter to order to use on self sealing cans. This is made to use in normal automotive air and home ac fittings. Fitting I s fairly cheap.

What are the extra parts in a separate bag ?

The extra parts in the separate bag are three white washers and one connector.

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OMT 3-Way AC Manifold Gauge Set for R12 R134a R502 R22, 5 ft Hoses | Includes R134a Couplers Self-Sealing & Piercing Can Taps 29° Adapter; Solid Brass Build; Ideal for Auto Freon Recharge

Product ID: 69002780

Details

Brand
Orion Motor
Item dimensions L x W x H
12.99 x 9.06 x
Manufacturer
Orion Motor
Material
Aluminum Brass
Number of Items
7

🔧Self-sealing & piercing can taps

⏱️2.6 in. shock-resistant gauges

🛠️4-layer reinforced 5 ft. hoses

$148.77

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Description

❄️ Master your AC game with precision and durability — don’t get left in the heat!

BUILT TO ENDURE - Solid brass & rubber construction resists corrosion and wear for long-term reliability
READY FOR ACTION - Includes quick couplers, 29° adapter, and self-sealing can taps for fast, professional setup
LEAK PROOF CONFIDENCE - 4-layer resin and brass hoses rated for 600 psi working pressure keep your service leak-free
ULTIMATE COMPATIBILITY - Supports R12, R134a, R502, and R22 refrigerants—one set for all your AC needs
PRECISION AT YOUR FINGERTIPS - High-accuracy gauges with ±1.6% calibration for flawless refrigerant handling

The Orion Motor Tech 3-Way AC Manifold Gauge Set is a professional-grade diagnostic tool designed for servicing multiple refrigerants including R12, R134a, R502, and R22. Featuring shock-resistant 2.6-inch gauges with ±1.6% accuracy, reinforced 5 ft. hoses rated for 600 psi, and durable brass construction, this set ensures precise, leak-proof, and corrosion-resistant performance. Complete with self-sealing can taps, quick couplers, and a 29° adapter, it’s built for both pros and ambitious DIYers seeking reliable, long-lasting AC maintenance.

Specifications

ASIN	B07CZB2SHZ
Best Sellers Rank	#2,829 in Automotive ( See Top 100 in Automotive ) #1 in Air Conditioning Gauges #2 in Air Conditioning Diagnostic Equipment #6 in Engine Tools
Brand Name	Orion Motor Tech
Customer Reviews	4.3 4.3 out of 5 stars (2,943)
Included Components	1 x 3-Way Gauge, 3 x Hoses, 2 x Quick Couplers, 1 x 29° Adapter, 2 x Can Tap
Item Dimensions	12.99 x 9.06 x 3.94 inches
Manufacturer	Orion Motor Tech
Material Type	Aluminum, Brass, PVC
Model	8542049659
Part Number	OMTDMG3N
Warranty Description	1 year

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