Laser: Reflective. Applications: 2-Cycle ( 1, 2, 3, 4 Cylinder ). 4-Cycle ( 1, 2, 3, 4, 5, 6, 8 Cylinder ). Detection distance: 30 ~ 200 mm. Range: Engine: 100 ~ 20,000 r / m. here we are always standby to try you a 100% satisfied buying, hope you'll enjoy an excellent buying experience here.
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