The 3M Hookit low profile finishing disc pad is a soft density backup pad in 5 in or 6 in Dia for 5 and 6 in abrasive discs. The soft density foam provides additional conformability and is ideal for final surface finishing applications following leveling and blending process steps. Focus on the task at hand with Hookit attachment whether your job requires a random orbital or rotary sander, buffer, grinder, drill, finishing sander or other power tool, 3M Hookit products allow you to focus more on the task and less on tooling. Hookit abrasive products with hook and loop backing are manufactured with loop material that mates to a backup pad, each sold separately, where tiny hooks firmly engage the loops. Attachment is quick, easy and secure during use. Sanding, finishing and surface conditioning products with the 3M Hookit attachment and removal system gives you an efficient way to work through multi-step finishing processes and can be used again and again for the life of the abrasive. This disc pad has 5/16-24 external thread compatible with common orbital and random orbital sander. Max opm and rpm is 12000. Use this disc pad with grade 220 and finer abrasive discs for finishing flat or contoured surfaces.