Thten Wa0010 Trimmer Replacement Blades Compatible With Worx Product Details Compatible Models: for Worx WG180,WG175.1,WG175,WG170.1,WG170,WG166.1,WG166,WG165,WG163,WG160.4,WG160.3,WG160.2,WG160.1,WG160,WG157,WG156,WG155,WG154,WG153,WG152,WG151.5,WG151,WG150. Easy Installation: simply push this trimmer head into the string socket and it automatically locks in place with assistance from the side push buttons. Packing Including: 18 Pack Polycarbonate Blades FOR BEST USE: avoid using this accessory for edging, working alongside brick, chain, or wooden fencing Quality Assurance: If you have any quality problems, please feel free to contact us, we will provide appropriate solutions within 24 hours. 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.