Industrial Grade (IG) straight shank bits are designed for use in a hammer drill equipped with a 3 jaw Jacobs type chuck. The bits meet ANSI standards and can be used to drill in concrete, block, brick and soft stone. Industrial Grade straight shank drill bits are designed for general purpose rotary percussion drilling. The bits can be used for drilling in most masonry materials. This economical drill bit has a rolled slow spiral flute design and a positive angle carbide tip for use in hammer drills.