A safe knife, robust and almost indestructible

For more than 10 years I use this knife umpteen times daily, for cutting tile cartons in shrink-wrapped pallets, for separating out of old silicone and acrylic joints, for opening of silicone cartridges, etc.
Sometimes I have a different diameter from a colleague in his hand, and then I realize, at any price, I would not change. Prerequisite is the good Stanley blades, cheap products from the hardware store are very quickly become dull and break unintentionally. Also the blade change is not a problem, as is the extension and retraction of the blade, you do not turn up until it stops, a quarter to half turn arrived to move the blade and determine the locking wheel.
Plus Minus 10.00 Euro, which are well laid out for professionals and DIY enthusiasts. People with two left hands hurt Also on teaspoon.
Strong buy recommendation, so 5 *****