140Pcs Solder Connector + 120Pcs Butt ConnectorThe Set Consists Of Two Different Types Of Connectors. 140 Pieces Are Solder Connectors With Tin In The Middle, And The Other 120 Pieces Are Butt Connectors. 2 Types Of Electrical Connector Have 4 Sizes, Cable Sizes 0.25-6.0 Mm Are Suitable. Built-In Heat Shrink Tubing Seals The Connection Point Enough For Your Application.Waterproof Crimp LugsWaterproof Solder Connector And Waterproof Butt Connector Are Made Of Insulated Heat-Shrink Tubing, Which Is Flame Retardant And Environmentally Friendly, Which Guarantees High Tensile Strength, Electrical Waterproof And Anti-Leakage Function.Easy To UseWire Connector Solder Joint--->Just Strip 2 Wire Ends, Put Them Together In The Soldered Connector And Use A Heat Gun To Heat And Melt The Solder In The Heat Shrink Tubing. Butt Connector--->Simply Insert The Cable Ends, Crimp With Pliers, And Shrink The Insulation With A Hot Air Blower.Wide ApplicationCable Connect Offers 4 Different Sizes. Butt Connector Yellow For Wire Thickness 4.0-6.0 Mm, Butt Connector Blue For Wire Thickness 1.5-2.5 Mm, Butt Connector Red For Wire Thickness From 0.5 To 1.5 Mm, Butt Connector White For 0.25 To 0.34 Mm. Application In Robot Wire Mowing, Diyers, Motorboats, Modified Motorcycles, Trailer Conversions.Easy To CarryCable Connectors Come With A 30 Day Full Money Back And Warranty Of 12 Months. The Plastic Box In Which The Connectors Are Located Is Stable And Offers Good Organization And Sorting.