Feature:  
When properly heated and shrunk, they provide a seal that is resistant to water, steam, salt and other contaminants.  
Heat shrink insulated connectors will provide improved pullout strength and strain relief.  
The translucent heat shrink material allows visual inspection of the connection, and included almost frequently-used connectors' size.  
Excellent splice for marine, automotive, outdoor, or harsh environment use. 

Specification:  
Insulation Sleeves: PE  
Terminal Body: Tin Ring  
Colors : Red, Blue, White, Yellow, Green，Black
Type and Size:
White Heat Shrink Connectors: Suits cable/ wire sizes AWG 26-24 / 0.25-0.34mm2  
Red Heat Shrink Connectors: Suits cable / wire sizes 18-22AWG / 0.5-1.0mm2  
Blue Heat Shrink Connectors: Suits cable / wire sizes 16-14AWG / 1.0-2.5mm2  
Yellow Heat Shrink Connectors: Suits cable / wire sizes 12-10AWG / 4.0-6.0mm2  
Green Heat Shrink Connectors : Suits cable / wire sizes 18-16AWG/ 0.75-1.25mm²
Black Heat Shrink Sleeve (3.2mm, 20mm Long)

Package Included: (The items you select)
50/100/400/500/800/1000pcs Heat Shrink Butt Connectors

400PCS: Mixed(4 Size+Sleeve)
25PCS  x White Connectors
35PCS  x Red Connectors
30PCS  x Blue Connectors
10PCS  x Yellow Connectors
300PCS x  Black Heat Shrink Sleeve

500PCS: Mixed(4 Size+Sleeve) 
40PCS  x White Connectors
50PCS  x Red Connectors
50PCS  x Blue Connectors
20PCS  x Yellow Connectors
340PCS x  Black Heat Shrink Sleeve

800PCS: Mixed(4 Size+Sleeve)
50PCS  x White Connectors
70PCS  x Red Connectors
60PCS  x Blue Connectors
20PCS  x Yellow Connectors
600PCS x  Black Heat Shrink Sleeve

1000PCS: Mixed(4 Size+Sleeve) 
80PCS  x White Connectors
100PCS  x Red Connectors
100PCS  x Blue Connectors
40PCS  x Yellow Connectors
680PCS x  Black Heat Shrink Sleeve

Note:
Please allow 1-5mm errors due to manual measurement.
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.