New (Oem) 39154 Air Filter Emglo Air Mate Series Product Details Air Filter for Hand Carry Air Compressors 3/8" NPT. Emglo 39154 3/8" NPT Threads NPT or National Pipe Thread is measured by the inside diameter of pipe , not the outside of the threads. NPT male pipe threads are tapered and have outside diameters of: 3/8a 0.645- 0.675 1/2" 0.810 - 0.840 Emglo Air Mate Series Emglo 39154 3/8" NPT Threads 3/8? 0.645- 0.675 1/2" 0.810 - 0.840 Contact with us - if you have any questions about product ! 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.