Marcrist Diamond Core Drill Bit 127mm - 1/2″ BSP (F) Rotary for Concrete & Brick Professional Large Diameter (3634F)

PROFESSIONAL 127MM CORE DRILL BIT; Heavy-duty diamond core drill bit engineered for fast, controlled drilling in concrete, brick and block, equally specified as a 5 inch core drill bit. ROTARY CORE DRILL BIT DESIGN; Designed strictly for rotary use (no hammer action) and compatible with SDS Plus and 3-jaw chuck drills via the correct adaptors, sold separately. EASY-START SEGMENTS; Precision diamond segments provide smooth entry into concrete with improved accuracy and reduced wandering, making this an accurate core drill bit for 125mm duct and extractor vent access. LOW VIBRATION SOLID BARREL CONSTRUCTION; Dynamically balanced 165mm steel barrel enhances drilling stability and produces cleaner core extraction. DRY CORE DRILLING CAPABILITY; Versatile dry diamond core drill bit compatible with dust extraction systems; connecting a core drill dust extractor supports cleaner, safer indoor working. TRADE & DIY SUITABLE; Ideal for builders, plumbers, electricians and HVAC installers, plus confident DIY enthusiasts, this 127mm diamond core drill bit suits both site work and home improvement projects.