AA-410G 4" Wall Mount Commercial Hand Sink Faucet with 3-1/2" Gooseneck Spout (NO LEAD) GSW Brand Excellent engineering design and qualified-skilled craftsmanship inside and outside Reinforced double O-Ring valves with hot and cold mark on stem Compression nuts washers attached Color coded red and blue handles with heavy duty double O-ring 3-1/2" gooseneck spout 1/2" NPT male inlets. NSF approved Refund or Exchange: All return must be made within 14 days of receive, in original condition with packaging (New and Unused), and subject to 20% restocking charge. Exchange or refund. We shall not be liable for any merchandise defects, spoilage of products, loss of sales, or consequential damages. Buyer is responsible for all associated shipping costs for undelivered, unclaimed, or returned packages unless we have made an error in the listing or the item is defective. If you ask for a refund during valid period, we will offer you a refund without postage charges. Shipping and handling charges, insurance are not refundable in any case. After you have received the merchandise in satisfactory condition, please leave us feedback. If there is a problem or a concern to leave negative feedback. Please send us the message or picture. We will do the best to solve the problem and satisfy the situation. Appreciate your business.