Professional A3 rotary trimmer, Sturdy metal table with non-slip rubber feet, Practical format lines on the table with mm graduation, Double guide bar for absolutely accurate cutting, Ground circular blade and lower blade for precision cutting, Automatic clamping, Adjustable backstop, Rear feet for space-saving upright storage. The Dahle 552 Professional Rotary Trimmer with a 510mm cut length is designed for precision and accuracy. It features a ground self-sharpening blade that cuts in both directions, a Dual-barrel guide bar for strength, and an automatic clamp to prevent shifting. The automatic clamp holds your work securely by hand is no longer necessary. The trimmers integrated, automatic clamping system provides even pressure that prevents your work from shifting. This trimmer features a self-sharpening cutting system. No need to worry about replacing dull or worn blades, this system sharpens as you cut to maintain a perfectly honed edge. The blade's precision graduated edge wi