Features: 【Connector Set】Includes 5 sets of DT connectors 5 pieces green wedge locks, 5 pieces connector retaining clips, 5 pieces sealing , 10 pairs of solid male and female contacts (16 gauge). 【Material of the connector】The PA66 nylon, strong and aging-resistant, waterproof to IP68（1M/4H), suitable for long-term use. The connector material is UL94-V0 certified (UL94 flame retardant). Note: Due to the addition of flame retardant, the product may have a certain, which is normal. 【Connector Performance Improvement】IP68 waterproof - all without additional housings or covers. Better protection of your electrical equipment: e.g. automotive equipment, marine equipment, outdoor equipment exposed to rain, etc. To meet IP68, the use of 20-16 wire guage is recommended, compatible insulation diameter range: 2.23-3.68 mm [.087-.144 in]. 【DT Connector Terminal Kit】solid contacts are made of solid copper alloy, easy to crimp and insert into the and suitable for 20-16 wire guage. They have high stability and conductivity, low temperature rise, extend the service life of the equipment and improve the safety and stability of the system. 【Wide range of applications】DT connectors have been proven in practice and are widely used in trucks, buses, motorcycles, rescue vehicles, construction, agriculture, mining, forestry, leisure and marine applications. 【Applicable crimping pliers】Recommended for the use of for NEW-DT1/for ACT-HDT-16DT, for JRD-HDT-48 (for HDT-4800 equivalent) crimping pliers, this crimping pliers is suitable for crimping 16# solid pin/socket contacts. Specifications: *Part Name:Connector, Wedge lock, stopper, round terminal, *Material:ABS *Size:2pin 18*18*55mm, 3pin 21*25*55mm, 4pin 21*20*58mm, 6pin 21*24*58mm, 8pin 38*25*58mm, 12pin 41*22*58mm *Color:Gray *Optional Type:2pin, 3pin, 4 [COMPREHENSIVE CONNECTOR SET] Includes 5 sets of DT connectors, 5 green wedge locks, 5 connector retaining clips, 5 sealing , and 10 pairs of solid male and female contacts (16 gauge) for all your wiring needs. [MATERIALS BUILT TO LAST] Made from PA66 nylon that is strong and aging resistant, long-term use without compromising performance. [WATERPROOF IP68 RATING] Designed to withstand harsh environments with an IP68 waterproof rating (1M/4H), making it for outdoor applications. [EASY ASSEMBLY] Each connector features a user-friendly design that simplifies installation and maintenance for both professionals and DIY enthusiasts. [SIZING REMINDER] Please refer to your own size chart for accurate fitting rather than Amazon's size guide.