Screw-Mount Bike Computer Magnet

This speedometer magnet features a precise 1.3 cm × 1.2 cm footprint and fixed-screw mounting system, ensuring mechanical stability unmatched by clip-on or adhesive solutions. Each unit weighs only 8.4 g — lightweight enough to ignore dynamically, yet dense enough to resist wind flutter or micro-vibrations. The metal housing protects the internal magnet from bending, chipping, or environmental oxidation, supporting sustained use in variable UK weather. Its magnetic field strength is calibrated for optimal interaction with standard reed or Hall-effect sensors — delivering crisp, jitter-free pulse signals essential for accurate average/max speed calculation and lap timing. Works identically across wired and wireless bike computers requiring external wheel sensing — no software dependencies or firmware locks.