Jets Size, 410 Number of nozzles, 1 Material, Brass Style, Mikuni Hex Head Types, Main Number, 300631Carburetor jet available slot large head style (Needle) or hex head style (Main). All jets are flow calibrated and extremely accurate in terms of fuel flow rate as stamped. Jets Size: 410 Brand Mikuni Model Mikuni 4/042-410 Exterior Painted Item Weight 2.08 ounces Manufacturer Mikuni OEM Part Number 07-141 Item model number 4/042-410 Package Dimensions 2 x 2 x 2 inches Manufacturer Part Number 4/042-410