Oscillating Scraper Blade: 2 1/4 in Blade Wd, 3 3/4 in Blade Lg, Hooked, Steel, 2 Pieces, 2 PK

These sealant removal hooks fit oscillating tools with a 12-point mount. Also known as 12-sided hex blades, they bolt into place to form a strong, rigid connection that minimizes vibration and maximizes torque transfer. They are not compatible with any other type of mounting system.