The Montolit FPS35 and FPS75 Countersink Drill Bits are diamond drill bits designed to finish holes for a smooth, high-end finish. They are very useful to reduce the risk of cracking with standard and large format tiles subjected to tension (ex tightened plumbing, led lights etc) and are also very useful to improve the edge finishing of exposed holes.
Montolit FPS35 - 3/16 inch to 1-3/8 inch.
Montolit FPS75 - 1-3/8 inch to 3 inch.
NOTE! This is not a core bit for drilling. It doesn't make new holes but it bevels the hole cleaning and reinforcing the borders when the borders are chipped or need to be cleaned.