Processing customization is the purpose of carburetor main jet hole idle jet hole size (30-52) 10 packs (mm) model PHBG PHBD idle jet jets 1488 applicable models PHBG PHBD idle jet jets idle jets 1488 Item No. SCL-2022060078 Size 1488 idle speed holes (30-52) 10 packs are suitable for Dellorto UA, Dellorto UB, can be used for Dellorto PHBG AD/DS racing, and can be used for Dellorto MA, Dellorto MB, Dellorto PHBD, Dellorto Product name: PHBG carburetor GARDEN CARBURETOR 1488 MINIMUM PHBG FILLET 5 Product Details: Brass Weight: 30g Applicable: Part number: 1488 Diameter head: 4 mm Thread size M5 x 0.8mm Available from our stock in sizes: 30, 32, 35, 38 , 40, 42, 45, 48, 50, 52 Fitment: Dellorto MA, Dellorto MB, Dellorto PHBD, Dellorto PHBG, Dellorto UA, Dellorto UB This jet is used for adjusting the mid throttle range in carburetor.