Base plate size and compatibility - Base plate measures 30 x 25 cm with an alignment grid and ruler for precise measuring. Compatible with common sizes such as A4, B4, B5, A5, B6, and B7. High quality and durable construction - Made from high-quality steel and plastic. The sturdy metal base and sharp blade deliver precise, flat cuts and are built to last without warping or breaking. Portable design for easy handling. Precise and safe operation - Engineered for accurate grid alignment. Millimeter and inch scale markings on the underside assist exact measurements. Safe and easy to use: keeps fingers away from the blade with a secure clip near the blade and a locking hook on the trim-arm when not in use. Efficient performance - Trims up to 12 sheets at once, eliminating the need for scissors. 29 cm cutting length supports clean, straight cuts and helps streamline workflows. Use scenarios - Office or classroom: batch trim handouts, forms, and reports to standard sizes for neat presentation. - Crafting and scrapbooking: precise trimming of photos, cardstock, and card-making materials for clean edges. - Small studio or project work: efficient trimming of multiple sheets of paper or light cardstock for professional results.