Specification: Quantity: 200/100/50/20 PCS Material: PE+Copper Color: Red, Blue, Yellow Type: Heat Shrink Butt Connectors Features: Made with heat shrink material, crimp with a true plated copper core. 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. 200 PCS with Box Red Connectors: AWG 22-18 fit Wire/Cable 0.5-1.5mm2;: 90PCS Blue Connectors: AWG 16-14 fit Wire/Cable 1.5-2.5mm2;: 90PCS Yellow Connectors: AWG 12-10 fit Wire/Cable 4.0-6.0mm2;: 20PCS 100 PCS with Box 1) Red connector : Suits cable/ wire sizes 0.5-1.5mm2; 18-22 AWG (40PCS) 2) Blue connector : Suits cable/ wire sizes 1.5-2.5mm2; 16-14 AWG (40PCS) 3) Yellow connector: Suits cable/ wire sizes 4.0mm2; 12-10 AWG (20PCS) 50 PCS with Box 1) Red connector : Suits cable/ wire sizes 0.5-1.5mm2; 18-22 AWG (20PCS) 2) Blue connector : Suits cable/ wire sizes 1.5-2.5mm2; 16-14 AWG (20PCS) 3) Yellow connector: Suits cable/ wire sizes 4.0mm2; 12-10 AWG (10PCS) 20 PCS without Box 1) Yellow connector : Suits cable/ wire sizes 0.5-1.5mm2; 18-22 AWG (10PCS) 2) Red connector : Suits cable/ wire sizes 1.5-2.5mm2; 16-14 AWG (10PCS) Package Included: 20/50/100/ 200 PCS Heat Shrink Butt Connectors With Plastic Box