Irwin Granite Masonry Drill Bit

The Irwin Granite Masonry Drill Bit measuring 3.5mm diameter x 75mm length offers precision drilling capability for slightly larger small-diameter applications. This size is particularly useful for standard wall fixings, smaller electrical conduit installations, and detailed masonry work requiring accurate hole sizing in granite, concrete and natural stone. Engineered with an extra hard, thicker carbide tip, this 3.5mm drill bit delivers up to 40% more holes than conventional masonry drill bits, significantly extending its working life. The innovative rounded cutting edges provide 50% more accurately sized holes per bit, ensuring your fixings fit precisely every time without the need for remedial work. The 75mm overall length strikes an excellent balance between control and drilling depth, making it suitable for a wide range of standard fixing applications whilst maintaining precision and stability throughout the drilling operation.