You are buying a pair ( 2 ) of NOS SU # 007 carburetor needles. I got these in a parts lot back in the early 70's and now have no use for them. I believe they fit early Spitfires with HS2 carbs. but I'm not 100% sure.
Volvo Amazon 120 PV B16B SU Carburetor Flange Insulating Flange NOS New Old Stock
Datsun 240Z 1970-72 Round Top Carb Rebuild Kit Hitachi SU Carburetor NEW 531
1972 Datsun 240z Hitachi SU Carburetor Flat Gasket Set E88 Made In USA
Vintage Iapco A-0171-001 SU Carburetor Air Cleaner Air Filter
New SU Carburetor Tuning Tool Kit MG, MGA, MGB, MGC, Triumph, Spitfire, Jaguar