In the pictures some show as 18-14G and others as 18-12G, is it an assortment? or all one size?

These are all one size, 18-12AWG, model 221-2401.

can this be used to say splice a break light on a trailer? (outdoor use)

You will have to seal them with a waterproof shrink wrap which I would double up or use a Wago Gelbox. Keep in mind that the Gelbox is only for low voltage applications. So, you can use it for the brake light. You can also use a waterproof heat shrink connector.

will these pass electrical inspection? Will they pass with the NEC and most local inspectors?

Unless they are listed as an approved connection device in the NEC they will not pass inspection in commercial/residential applications for voltage over 48v.

Where can I order the clear splicing 221s? It appears Wago changed the design and applied a opaque white plastic cover. The clear ones were better.

The clear ones are WAGO 221-2411. The clear 221-2411 isn't rated to support 12AWG wire while the opaque 221-2401 does support 12AWG.

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WAGO 221-2401 Lever Nuts Compact Splicing Inline Wire Connectors with Case | 20pc

WAGO 221-2401 Lever Nuts Compact Splicing Inline Wire Connectors with Case | 20pc

Product ID: 515721006

Details

Brand
Peppy Products
Color
Transparent
Connector Type
Clamp
Current Rating
20 Amps
Gauge
12.0
Material
Plastic Copper

⚡20A current rating

🔍Transparent housing for instant wire check

🔧Fits 20-12 AWG solid & 18-12 AWG stranded wires

E£ 2775

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Description

⚡ Connect smarter, not harder — the pro’s choice for flawless wiring!

VISUAL ASSURANCE - Transparent housing lets you instantly verify proper wire insertion and strip length—no guesswork.
ROBUST RELIABLE - Stainless steel clamps ensure a secure, UL-certified connection rated for 20 amps.
COMPACT ORGANIZED - 20 connectors neatly stored in a durable plastic case—perfect for on-the-go pros.
TOP RATED INDUSTRY FAVORITE - Join thousands of savvy professionals who trust WAGO’s 4.8-star rated performance.
EFFORTLESS MULTI WIRE COMPATIBILITY - Seamlessly connect solid, stranded, and flexible copper wires without fuss.

The WAGO 221-2401 Lever Nuts are compact, UL-certified wire connectors designed for quick, reliable splicing of 20-12 AWG solid and 18-12 AWG stranded copper wires. Featuring transparent housings for visual inspection and stainless steel clamps rated for 20 amps, this 20-piece set comes in a durable case, making it an essential tool for professional electricians and DIY enthusiasts alike.

Specifications

ASIN	B0BT8DHLJJ
Best Sellers Rank	#4,648 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Electrical Connectors
Brand Name	Peppy Products
Color	Transparent
Connector Type	Clamp
Current Rating	20 Amps
Customer Reviews	4.8 out of 5 stars 1,803 Reviews
Included Components	wire connectors
Item Dimensions W x H	3.75"W x 0.9"H
Item Type Name	wire connectors
Manufacturer	Peppy Products
Material	Stainless Steel
Material Type	Stainless Steel
Model	221-2401
Mounting Type	DIN Rail Mount
Number Of Contacts	40
Number Of Poles	2
Number of Positions	40
Part Number	p221-2401-20
Specification Met	UL
UPC	860006370657

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E£ 2775

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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