Set punte da trapano diamantate 1-1/2"-6" per carotaggio granito calcestruzzo, profondità 18'' bagnate
5"& 6" WET coring bits for core drilling. It has industry-standard BS 1-1/4’’-7 connection end and fits perfectly for both hand-helded and fixed drilling machines. Wet Type Concrete Core Bit. Inside Barrel Depth: 16.5" Approximate.