Two Striper Diamond 1/4 Diamond 5/PkTwo Striper multi-use diamonds features Faster Cutting and Longer Lasting. Crystals placed evenly and precisely in a uniform matrix, are permanently fused to a surgical-grade stainless steel shank. Shape Number 1/4 Grit Medium2013203 Minor Diameter n/a Major Diameter 0.7mm Abrasive Length 0.7mm Available in convenient 5-packs. Recommended use: Flame/Feather Edge Prep/Break Contact Can be used for full-contour Zirconia. Popular design for cast-gold crowns. Margin design for tight anterior crowns and tipped or perio-involved teeth. Thin-shaped diamond for breaking interproximal contact