Drill bit Dedra DED1578, 1 pc, diameter 2.5 cm, steel, for stone/terracotta/glass/ceramic

Dedra DED1578 is a single steel drill bit with a 2.5 cm diameter designed for drilling hard brittle materials such as stone, terracotta, glass and ceramic. The one-piece construction provides rigidity needed when making holes in tile, masonry or glass-based surfaces. This bit is intended for use with compatible drills and appropriate drilling speeds to achieve clean, controlled holes in brittle substrates.

Advantages

The solid steel construction delivers durability and resistance to bending during use. The large 2.5 cm diameter enables creating substantial openings for fixtures, anchors or through-holes without the need for multiple passes. Compatibility with a range of brittle materials reduces the need to change tools between tasks when working on mixed-material surfaces. The single-piece shape simplifies mounting and ensures stable operation in rotary drilling modes.

Suitable for

• Drilling anchor or fixture holes in stone and masonry
• Creating openings in terracotta tiles and pavers
• Cutting or perforating glass panels where appropriate technique is applied
• Making holes in ceramic tiles for plumbing, electrical or mounting applications

Key specifications

• Material: steel
• Diameter: 2.5 cm
• Quantity: 1 piece
• Intended materials: stone, terracotta, glass, ceramic

How to use

Select a drill with a compatible chuck and set the rotational speed recommended for brittle materials. Secure the workpiece and mark the drilling point. Start with light pressure to establish a guide and increase pressure gradually while keeping the drill perpendicular to the surface. Use water or another suitable coolant when drilling glass or ceramic to reduce heat and prevent chipping; for masonry and terracotta, intermittent drilling and clearing debris will improve performance. After completing the hole, clean the edges and inspect for chips or cracks before installing fixtures.

Usage recommendations

Use the Dedra DED1578 with steady, controlled rotation and appropriate coolant when needed. Wear eye protection and gloves, clamp or support the workpiece, and avoid hammer mode or excessive impact on brittle materials to reduce the risk of cracking. Match drill speed and feed to the material type for best results.