Features: The new version is designed for more convenient operation, saving user's time and energy. Compact and lightweight, the main body weight is only 75 grams, 40 Percent less than the old version. It is more suitable for frequent use in the workplace. Separate design, the round base and the bearing are magnetically attracted, the two can be used together or separately, more suitable for ring-shaped cutting. Without locking, the round base and sliding block are self-locked by magnetic damping, the non-locking design makes diameter adjustment easier, it just need a slight push to adjust the diameter avoiding tight locking. Safety Warning: for adults Cutter set include: Bearing cutter base x 1 Adjustable blade holder x 1 Center locator jig x 1 Cutting blade set x 1 (one for each of 30Degree/45Degree/60Degree)