The SPA-1 is purpose-built to fit pin holes on adjusting cups found on cup-and-cone bottom brackets. Manufactured from high-carbon tool steel to ensure long life, vinyl coated for comfortable grip, and color-coded for easy recognition.
Pin diameter is nominally 2.9 mm (0.11")
Flexes to fit pin holes from 10 mm to 45 mm (0.39" to 1.77") apart