I would like to update everyone ASAP on the Stens high lift flat blades. I will not and can not recommend these for northern grasses. Honestly the worst blades I have tried in 15 years! I have never had a blade drastically change the performance of a deck like these. The discharge pressure dropped dramatically causing the deck to clog and clump. I spent all morning cleaning up this mess! Cut was at 3.75" on a fescue/KBG mix, took off about 2 1/2" and the grass was wet. These pictures are after double cutting but before me cleaning up by hand!!