These are 50 pieces Heat Shrink Butt Connectors, which can give the connection a effective protection, even in awful condition.

Features
Heat shrink wire crimp terminals butt, can strongly hold the crimps.
Waterproof and prevent corrosion, can effectively protect the connection.
Allow visual inspection
Easy to install. Once crimped, heat with a heat gun to shrink, creating a permanent waterproof bond
Compare to ordinary connector, it's more durable and convenient.
These work great for automotive, marine, and many other applications

Specifications
Color: Blue + Red
Suits cable / wire sizes: Red 22-18AWG/0.5-1.5mm² + Blue 16-14AWG/1.5-2.5mm²
Length: approx. 35mm
Quantity: 25pcs + 25pcs
Voltage resistant: ＞600V
Volume resistivity(Ω cm): ≥10 15
Dielectric strength(KV/mm): ≥25
Protection type: IP67
Operating temperature: -55~125℃
Package Size: 13 * 12 * 3cm / 5 * 4.7 * 1.2in
Package Weight: 72g / 2.5oz

Package list
25 * PCS 22-18AWG/0.5-1.5mm² Heat Shrink Butt Wire Crimp Connector
25 * PCS 16-14AWG/1.5-2.5mm² Heat Shrink Butt Wire Crimp Connector

Tips: Once crimped, heat with a heat gun to shrink the out sleeve and activate the adhesive creating a permanent waterproof bond.

• Heat shrink wire crimp terminals butt, can strongly hold the crimps.
• Waterproof and prevent corrosion, can effectively protect the connection.
• Allow visual inspection.
• Easy to install. Once crimped, heat with a heat gun to shrink, creating a permanent waterproof bond.
• Compare to ordinary connector, it's more durable and convenient.

Heat shrink wire crimp terminals butt, can strongly hold the crimps.KKmoon