Hat type needles are designed to be connected directly to a flat bottom valve port. Use the needle bushing part number 35056 to connect the needle directly to any 1/4-28 Hamilton valve. Hat needles are sold in three-packs. Application: Designed to Be Connected Directly to A Flat Bottom Valve Port

Available options: Custom Length: 0.375 to 12 in Point Style: 2, 3, or 4