<br> <br> <br> <br> To start with each of the designs in the brand-new 4100 series features the current Smart Guard System. This technology guarantees maximum security with a tool complimentary modular blade guard, anti-kickback pawls & riving knife. As stated there are no tools required at all to separate or insert any of these functions making it extremely easy to use. As well as the freshly designed blade guard works separately with one another to present exceptional control and security while cutting.<br> <br> <br> <br>