Square hole: 4mm, 3mm, 3.5mm; Hex hole: 9mm, 10mm. Suitable for adjusting motorcycle engine valve screws, compact and easy to carry.
The straight feeler gauge has 32 blades(0.04mm-0.88mm/0.0015"-0.035")with a tapered profile to allow for access into tight places. The Offset gauge has 16 blades(0.127mm-0.508mm/0.005"-0.020")with an offset design that's great for awkward areas.
Made of premium metal, durable, anti-rust, with high hardness and good toughness, not easy to deform, fracture, and wear.
Fits most of motorcycle and scooters, can easily tighten or remove most hex and square screws on furniture, bicycles, cars and any other air filled tires, widely used in the automotive, household, manufacturing, construction and other industries.