200Pcs Heat Shrink Butt Connector, Waterproof Crimp, Marine Wire Joint Product Details [EXECELLENT QUALITY] - Direct factory with excellent quality control, STRONG DURABLE. The copper core of our heat shrinkable joints is made of high quality tinned copper, in addition to being extremely conductive, it is easier to flatten and grip the wire [WATERPROOF] - Waterproof insulated, the polyolefin tubing on the outside and the hot-melt glue inner layer provide excellent water resistance when heated. The polyolefin tube reduces in size and the adhesive flows within the insulation [PERFECT FOR] - Perfect use for the repair technician on the electrical wiring. Seamless copper barrel design provides high tensile strength and mechanical damage resistance, translucent heat shrink tubing eliminates the issue of the barrel opening, high elasticity keeps steady performance [EASY USE] - Take two wires you wish to join. Remove the wire insulator, pick the terminal color you want. Insert the wire into the terminal one at the time and crimp by crimping tool, insert another terminal and crimp. Use air gun to apply heat on the heat shrink connectors [PACKAGE INCLUDES] - 200pcs Heat Shrink Butt Connectors. 3 Sizes, 90pcs Red, 9Opcs Blue and 20pcs Yellow. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.