1.Product Compatibility: Compatible With Shark Nv680 Nv681 Nv682 Nv683 Replacement Part Xhf680 And Xff680 (Because Of The Difference Of Hepa Filter, Only These Models Are Compatible) | | 2.This Product Is Only Compatible With Nv680, Not Compatible With Nv350 And Nv360 Series,Nv500 And Nv520 Series, Nv650 Series, Nv750 And Nv752 Series, Please Confirm The Model Before Purchg | | 3.Made Of High-Quality Materials, The New Roller Brush Can Effectively Suck The Debris On The Carpet And The Dust In The Gap Into The Dust Box, And The Filter Can Filter The Dust Well And Prevent The Dust From Entering The Air, So That The Carpet Looks Good | | 4.It Is Easy To Disassemble And Install, And It Needs To Be Removed With A Screwdriver Tool During Installation. There Are Two Hidden Screws Under The Small Wheels. You Need To Remove The Wheel To See The Screws. The Disassembly Process May Take A Few Minutes. A Short Wait Brings You New Carpet Tools | | 5.Regarding After-Sales And Mainten.