Applicable: The soft cover sealing strip is suitable for 6mm slot aluminum extrusion profile, 2020 series or 1010 series Material: Made of high quality plastic material for long lasting use. Length：10 meters/about 394 inch,the aluminum profile slot cover can be easily cut to the corresponding length according to actual needs Function: Aluminum profile sealing groove cover can prevent dust and dirt from entering the aluminum profile linear guide rail The 6mm aluminum profile slot cover fit 1010/2020 series aluminum extrusion profile 6mm T-slot, also for 6mm V-slot，It is a necessary aluminum profile parts to keep dirt out of the rails for your 3D printer