Milwaukee 48 62 4252 1 in. x 16 in. SLEDGE SDS MAX Flat Chisel B00004XPHM metal pipe metal pipe Hydrogen Gas Detector Gas Type H2 Number of Channels 0 Sensor Range 1 Percent and 2 Percent 25 Percent and 50 Percent LEL Alarm Type Audible and Visual Display LED Status Indicator Yes Features On Board Relays At 1 Percent and 2 Percent Hydrogen Concentration Dry Contacts Can Be Monitored By Scada Modbus Etc NEMA Rating Type 1 IP Rating IP10 Connection Plugs Terminals For Use With Stand Alone Building Automation Systems Fire Alarm Panels Burglary Alarm Panels High grade The extended feature length at the tip of the chisel enables up to two times longer life compared to standard chisels and up to 30% longer life compared to other self sharpening chisels