- Japan's first standard inch size product.
- Consistent production from casting to machining and surface treatment.
- Cell production method allows the production of many kinds of products in low volume, with short lead times.
- Imbalance mass allowance on outer circumference is 0.2% of pulley mass or 3 g, whichever is larger.
- Same accuracy as the balance prescribed in JIS B 1854-1987, "General use V-pulley".* M-type pulleys are exempt.