The 10 mm thick multi hole interface pad is used in combination with hook & loop sanding discs for sanding rounded surfaces and contours. Using the interface pad will also produce a softer result. The Interface pad is placed between the backing pad and the sanding disc.
The multi-hole configuration allows fitting to many different makes of sander. They are fitted between the sanding pad and the abrasive disc minimising wear of the sanding pad, simply peel off and discard when it eventually becomes worn.