Maxcraft 60403 16-Foot by 3/4-Inch Auto Locking Tape Measure Self-locking design automatically stops and holds tape at any length and retracts with push button thumb switch Dual inch/metric scale for all jobs Professional-grade, impact-resistant stainless steel housing with non-slip rubber grip 3-rivet sliding end hook for accurate inside and outside measurements Magnetic end hook attracts to metal studs, pipes, and ceiling grids for quick measurements