Technical data: Diameter mm: 225 Grit: 100 Type: PS 33 CK Hole shape: GLS38 (8 dust extraction holes of 10 mm on a circumference of 70 mm + 1 hole of 18 mm) Binder: synthetic resin Grain: fused corundum Coating: semi-open Backing: C-paper Package contains 50 discs. Package dimensions: Gross weight kg: 1.05 Height mm: 55 Width mm: 250 Length mm: 235 Especially for use on random orbit sanders, the PS 33 CK sanding discs from Klingspor are self-fastening. Thanks to the reliable self-adhesive layer on the back, the disc can be easily attached to the machine by pressing it on. Thanks to the full-surface mounting, the sanding disc adheres smoothly and firmly. Thanks to the properties of this abrasive, it is the right choice for sanding - paints, - varnishes, - wood, and - fillers. ** The photo shown is for illustrative purposes only.