Separating Discs 1" X .022 Both Sides Cut Box of 100 Orders over $100.00 are usually shipped within 24 hrs of receipt (excluding weekends). The estimated delivery dates showing on Amazon are usually delivered much sooner than the dates shown. Thin grinding disks cut on the edge, and on one or both sides. Excellent for cutting chrome casting and non-precious metal casting sprues. Available in 3/4" (19 mm), 7/8" (22 mm) and 1" (25 mm) diameters, with pin hole for mandrel mounting. Sold by box of 100. Free Shipping!!! Used by Professional Jewelers