The Bosch OSL350SPDK Starlock Oscillating Multi-Tool Delta Sanding Pad Set features a triangular Delta sanding pad for attaching triangular sheets for detailed sanding. This pad features the three-dimensional Starlock tool accessory interface, which provides more contact area compared to a flat interface for best grip and highest torque transfer. Sanding with a multitool often requires access to hard-to-reach areas at difficult angles. These Bosch sanding triangles also meet the need for material removal and surface finishing on multi-purpose plywood, hardwoods and softwoods.