Bosch Self Leveling Cross Line Laser GLL75 40G Green Beam (75 Ft Range 1 8 Inch Accuracy Smart Pendulum System Interior Layout Alignment) Router Bit An innovative SPEED Edge slot design An innovative SPEED Edge slot design absorbs dynamic vibration and reduces core drag by 30% across high torque corded and cordless angle grinders utilizing a 7 8 inch or 5 8 inch arbor configuration during heavy duty wet or dry operations 2 in Track Gauge 6 IP54 Jobsite Durability: Rugged over molded housing shields internal components against dust ingress and accidental water splashing common in active construction always store your laser in its pouch when not in use and ensure the pendulum lock is engaged before moving the unit between different areas of the jobsite