The Rapid Core wet coring system uses an easy three-step procedure to core holes in pre-cast concrete, concrete pipe, ductile iron pipe, HDPE pipe, vaults, walls and floors. The kit includes a guide post, drive shaft, box of 10 inserts/anchors, adjusting wrenches, 6-ft. water hose with fittings, drill bit, mandrel and carrying case. Power is supplied by a high-speed right angle grinder or right angle drill. Minimal water is needed and removal of the core bit and concrete core is easy. The guide post ensures precise 90° angles when coring floors and walls. Optional core bits produce holes from 2 to 8 in.