SIGMA ENLARGEMENT DRILL BIT D25-12MM M14

The Sigma D25-12mm enlargement drill bit is your go-to solution for adjusting or widening pre-drilled holes in ceramic, porcelain, or stoneware tiles. Perfect for plumbing or fixture installations, it allows you to expand a 12 mm hole up to 25 mm without damaging the tile.

With its durable diamond coating and M14 thread, this bit fits on most standard grinders and is optimized for dry use. A smart, time-saving tool that prevents costly tile replacement due to small alignment errors.