EASY APPLICATION - Our interface pads serve as an intermediate piece (Interface Pad) between the abrasive and the sanding pad (sander). Simply stick to the backing pad and the abrasive underneath. GRINDING CURVES - Made of soft, extra soft and flexible foam. The foam interface wraps around curves and bumps like a sponge for sanding. ENHANCED GRIP - the velor (loops) on top is super strong and grips even bad hooks. A durable and strong hook-and-loop closure on the underside ensures a good grip on the abrasive. COMPATIBLE - compatible with all common triangular sanding plates of delta sanders and multi-tools such as Einhell, Metabo, Makita, Black+Decker, Bosch PDA 180, Bosch PDA 240, Bosch PMF, KRESS CDS 6420 / 6422e / 6425, Mirka , 3M, Festool