Casstrom No. 11 Field Saw V.2 Replacement Blade 7.25 in Overall 5 in Stainless Blade. 2. Please note: fits only with Version 2 which was launched 2021. Check that it is the correct blade by opening the handle of your saw and compare with the picture here above. To change the blade simply unscrew the four security screws/bolts separate the two handle scales and replace the blade. Please note that the three screws closest to the blade will only unscrew from the front of the handle (with Casstrom logo facing you) as the bolts inserted from the back are fixed in their position. The fourth screw and bolt at the end of the handle may require two allen keys/hex tools to be undone. Specifications for Casstrom No. 11 Field Saw V.2 Replacement Blade: Manufacturer: Casstrom Blade Length: 5 in Blade Material: Stainless Steel Length: 18.42 cm Overall Length: 7.25 in Package Contents: Casstrom No. 11 Field Saw V.2 Replacement Blade Casstrom OS133239: No. 11 Field Saw V.2 Replacement Blade 7.25 in Overall 5 in Stainless Blade