Change blade easier and quickly saving time and having carry additional tool

The Button to expose the blade operates easy & doesn't feel gritty. However it doesn't stay in the locked position well. Extremely easy to accidentally expose the the blade.

I've had two 10-499 knives for over 15 years each and have been very pleased with the quick-change blade mechanism and with the three-position blade extension. I've used it with standard and carpet blades with no problems. I also like that it easily retracts or extends the blade for safe use and storage. After this long the only problem I see is that recently the spare blades have started to tend to work their way out of the holder into the interior of the knife, making it impossible to use the yellow quick-access button. I instead have to take the knife apart to replace a blade. I'm experimenting with whether keeping more blades in the holder helps with this. I also just used WD-40 to lubricate the interior of the knife because the blade extension mechanism was getting difficult. Now it's like I have a brand-new knife. As an inexpensive and rugged utility knife this is a great one.

[This review was collected as part of a promotion.] I bought my Stanley Utility knife and I've had no problems, they are long lasting and the best quality, button never hangs up on it and easy to grip, definitely prefer Stanley over other brands, you can't go wrong with Stanley tools !