Officers from the proactive team had been investigating drug dealing around the Hagley Road in Edgbaston when they saw a man acting suspiciously.
A man, aged 32, was detained and a quantity of heroin seized alongside items including cutters and a screwdriver.
Police arrested two people in Birmingham as part of Operation Skybridge
He was arrested on suspicion of possession of class A drugs and going equipped, and remains in custody.
Officers also stopped a car in Edgbaston which had been linked to two road rage incidents.
A man, aged 41, was arrested on suspicion of making threats with an offensive weapon and criminal damage.
Operation Skybridge officers continue to carry out proactive enforcement across Birmingham, where they target offenders and disrupt crime.