Tange LN-3912 Square Taper Cartridge Bottom Bracket / BSA - Various Widths & Lengths

This is a replacement grade Bottom Bracket from Tange

– JIS square taper (J.I.S. is the Japanese Industrial Standard, and is generally used on square taper cranks made in Asia)

– English threads

– Steel cups and sleeve

– CrMo spindle

– Sealed cartridge bearings