Precast/prestressed concrete-grade core bits

Diamond matrix SP-U core bits are equal to drilling through hollow core plank and other precast/prestressed concrete elements, plus wire mesh-embedded slabs or structures. They operate at high speed with the Equidist technology, which precisely positions the bits for drilling performance. The 16-in. SP-U series has 11 bits of 1.75- to 12-in. diameter, all suited to the company’s DD110 to DD500 core rig ranges. Accessories include five-bag filtration packs and water collection system rings in five sizes for bits up to 10-in. diameter. — Hilti North America, Tulsa, Okla., 800/879-8000;