Question 1

Can you use these connectors to connect aluminum wire to Copper wire ?

Accepted Answer

You could use these connectors for almost anything, but *should* you use them? NO!!

If you have a home with aluminum wiring, you really should replace it as soon as you can. Aluminum wire is a clear and present danger if found in homes. Its not a job people should tackle themselves too. Hire a professional to replace/rewire. Also, each device should have a ground wire too. Many aluminum wired houses I've run into also end up with no grounds at outlets, so rewiring can fix two things at once.

Question 2

How many connectors are in the box?  Pro tip for the seller...  You may want to lead with this information.

Accepted Answer

$25.54 ($4.26 /10 Items)
 
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Deliver to Jeff - Orlando 32832‌
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Sponsored 
221-2401 | WAGO Lever-Nuts® Inline Splicing Connector | for Solid and Stranded Conductors | 2-Conductor with Operating levers | 20-12 AWG | Transparent housing | White Cover | [Box of 60 Pieces]

Question 3

Should i assume no 24-12 awg variants are included and look elsewhere?

Accepted Answer

This listing is for Wago 221-2401 which is good for:
20 - 12 AWG solid
18 - 12 AWG stranded

If you are using #22 & #24 wire as well, then you will need to use:
221-412  2 port
221-413  3 port
221-415  5 port
The last three connector variants are for 24-12 AWG solid and stranded.

Question 4

is it good for 14 Gage?

Accepted Answer

Yes….They actually fit 12 gage wire too: Here are the specs below:
20 ... 12 AWG, solid wire
18 ... 12 AWG, stranded wire

ASIN	B0BKR2SR7H
Best Sellers Rank	#84,623 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #247 in Crimp Terminals & Kits
Brand Name	WAGO
Color	Transparent
Connector Type	Clamp
Current Rating	20 Amps
Customer Reviews	4.8 4.8 out of 5 stars (1,852)
Gauge	24-12 AWG
Global Trade Identification Number	04066966120516
Included Components	wire connectors
Item Dimensions W x H	19W x 19H millimeters
Item Type Name	wire connector
Item Weight	2.3 Grams
Manufacturer	WAGO
Material Type	Polybutylene Terephthalate (PBT) Stainless Steel
Model	221-2401
Mounting Type	Panel Mount
Number Of Contacts	2
Number Of Poles	2
Number of Items	60
Number of Positions	60
Part Number	221-2401
Pitch	0.74 Inches
Specification Met	Ul 486c Listed
Temperature Range	85 Degrees Celsius
Upper Temperature Rating	85 Degrees Celsius
Voltage	600 Volts

221-2401 | Lever-Nuts® Inline Splicing Connector | for Solid and Stranded Conductors | 2-Conductor with Operating levers | 24-12 AWG | Transparent housing | White Cover | [Box of 60 Pieces]

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