Features: Environmentally friendly coppered terminals using standard 3.81 terminals, not need welding. Using a screwdriver to wire environmentally friendly coppered terminals, can be repeated wiring to use, wiring is solid and not loose transmission performances is stable. Thin design excellent and durability most of the welding less on the market with dust-proof tailpipe with 7mm inner diameter dust-proof tailpipe, soft material, bending-resistant, to ensure that the wiring is completed left and right tugging not shake the internal wiring. Comply with industrial design standards locking, tightly combined. Specifications: Product name: DB37 solderless joint Terminal Shell material: ABS plastic shell Size：about 7.4x7.6x2.15ccm/2.91x2.99x0.85in Type: Black Silicone Male/Female with Screw Nut；Solid Pin Male/Female with Screw Nut Package Includes: 1PC DB37 solderless joint note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.