●The reflective lenses of hand-held welding machines and cleaning machines need regular maintenance and cleaning to ensure the normal operation and welding quality of the equipment. ●Model:15.2*15.2*1.6/20*15.2*1.6/20*15.2*1.6-with holder/22.5*17*1.5/22.5*17*3/22.5*15.2*1.5/23*16*2/27*14*2/27*14*2-with holder/30*14*2/30*14*2-with holder/30*14*2-With Holder-23T、32*16*2/42*22*3.5