Drill bit Dedra DED1570 — 5 mm, steel, for stone/terracotta/glass/ceramic, 1 pc

Dedra DED1570 is a 5 mm steel drill bit engineered for drilling hard, brittle materials such as stone, terracotta, glass and ceramic. Supplied as a single piece, this drill bit is compatible with standard rotary drills and designed to produce precise, controlled holes in fragile substrates used in construction, tiling, sanitary installations and home repairs.

Advantages

The steel construction provides adequate rigidity for maintaining a straight drilling path while the 5 mm diameter allows for accurate, small-diameter holes. Its geometry and cutting profile are intended to reduce chipping and cracking when working with brittle surfaces, enabling cleaner finishes on tile edges and glass. Being a single-piece supply, it is convenient for occasional repair tasks and professional jobs that require a specific hole size.

Suitable for

• Drilling holes in ceramic tiles during tiling and renovation
• Creating fixation points in terracotta and similar masonry
• Drilling through glass for fixtures and light fittings (with correct technique)
• Precision drilling for sanitary installations and bathroom hardware

Key specifications

• Diameter: 5 mm
• Material: steel
• Suitable materials: stone, terracotta, glass, ceramic
• Package quantity: 1 piece

How to use

Mark the drilling point and secure the workpiece to prevent movement. Use a standard rotary drill at low to moderate speed; for glass and ceramic, start with a light pressure and maintain steady, even feed to avoid cracking. Applying water as a coolant and lubricant can reduce heat and friction when drilling through stone or ceramic. If drilling glass, consider using a backing support and pausing periodically to allow cooling. After drilling, remove debris and inspect the hole for chipping.

Usage recommendations

Choose an appropriate drill speed and steady pressure for brittle materials. Use protective equipment such as safety glasses and gloves. For best results on glass and ceramic, use cooling (water) and a backing material to minimize chipping; avoid hammer or impact modes on the drill unless specified by the drill and bit manufacturer.