The Classic Mechanic: MM, AF, BSW, BSF Spanner Conversion Chart
Britool Ring Spanner 9/16 BSF | L&S Engineers
Andover Norton - SPANNER (5/16"W/3/8" BSF X 5/8"UNF) - 06.4020
British motorcycle toolkit, BSF/Whit spanners vintage/ex-WD, timing light and valve compressors etc
Spanner Whitworth/BSF - 6 pieces Open End Set
CLASSIC LAND ROVER SERIES 1 / 2 SPECIAL BSF TOOLKIT SPANNER - £9.99 : The Vintage Tool Company , We sell Tools and Toolkits for Veteran, Vintage, Classic Motor Cars, Motorcycles and Commercial Vehicles
Gedore Professional BSW Combination Spanner
Vintage Pair of 7/16 5/16 BSF & 3/8 1/4 BSF 2 BA Slim Open Ended Spanners Wrenches - Etsy UK