Custom processing is the purpose of carburetor idle jet hole N424-25B size 1 (mm) model idle speed jet hole N424-25B applicable carburetor car article number SCL-2021040002 specification N424-25B set 28-50# (10 packs), N424-25B set 52-75# (10pcs) can be used for PWK carburetor to adapt to Keihin CV CVK FCR PE N424-25B product name: 10pcs Pilot Jet for Keihin CV CVK FCE CARB N424-25 carburetor modified main jet Main Measuring Hole Product Details: Copper Weight: 90g Bag 8*5cm Pilot Jets Size: 28# 30# 33# 35# 38# 40# 42# 45# 48# 50# 52# 55# 58# 60# 62# 65# 68# 70# 72# 75# Applications: FCR Horizontal and Downdraft Series FCR28, 32, 33, 35, 37, 39, 41mm Arctic Cat ATV with CVK carburetor Harley-Davidson w/Keihin BD (Screamin Eagle) and Keihin BH (non CV type) Kawasaki models with CVK and FCR carburetors (VN700/750-1500 Vulcan with CVK see N424-22-xxx) Yamaha YZF600R (95-07) Yamaha Snowmobile with Keihin BD carburetor