ULTRA THIN SINGLE EDGED: With high-temperature hardened ultra-thin single-edged blades, cutting parts is as easy as cutting butter, with an excellent cutting feel. CLEAN CUT: the flat surface of the part cut off with the single-edged pliers is smoother, reducing whitening marks. This reduces grinding time. TWO SPRINGS - REPLACEABLE DESIGN:The original pliers already had a weaker spring, which was designed to reduce fatigue for professionals during long hours of use, more suitable for larger projects, but we learned that a stronger spring was needed in response to customer demand, and we immediately developed a stronger spring. COMFORTABLE AND NON-SLIP: Each model takes a certain amount of time to assemble. stedi model pliers handles are compact in design, matte in texture and non-slip, and are comfortable for long hours of operation. GOOD HELPER: stedi model tool is an excellent tool for model hobbyists who focus on building modeling kits. It is a great helper for mode enthusiasts around the world, but it is only applicable to plastic models less than 3mm. It is not the flaws,it is ultimate.