The Stanley Fat Max extra heavy duty 25mm snap off knife, Stanley part number 0-10-486, a professional tool for the most serious tradesmen. The knife comes with an auto load blade magazine that is already filled with 4 x 25mm Stanley snap off blades with 7 segments per blade.Produced by one of the world's most trusted brand names this knife features the following details - easy opening, no screwdriver needed, a great ergonomic shape with a very positive and comfortable grip.