Shīfu zài lúngǔ shàng jiā le jǐ ge qiānkuài zuò dòngpínghéng.
The mechanic clipped on a few lead weights to balance the wheel.
Tips
usage
In the automotive domain 铅块 specifically means the small lead clip-on weights used to balance spinning wheels - newer shops are moving to lead-free (无铅) alternatives for environmental reasons.
