The Stanley Fat Max heavy duty 18mm sanp off knife, Stanley part number 0-10-481, a professional tool for all serious tradesmen. The knife comes with an auto load blade magazine that is already filled with 6 x 18mm Stanley snap off blades with 8 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.