High performance wet core bits engineered to drill high PSI concrete and reinforced concrete. Both drilling speed and lifetime have been vastly increased. Ideal for high PSI concrete, concrete with medium steel reinforcement and other hard masonry. In our lab tests, these bits drilled 50% faster and lasted 35% longer than the general purpose counterparts. High powered dedicated core drills are highly recommended as equipment. 10mm segment height with 12" drilling depth. 5/8"-11 arbor size, use wet only with dedicated handheld core drills or rigs in rotary mode only.