Drilling Machine with Core Cutters TOPO 4 Sima Purpose Features Usage Supplies ReserveIt is advised only for professional drilling jobs with large diameters. Model TOPO 4 Motor power 3.5 kW RPM 1st speed 490-320 rpm RPM 2nd speed 1160-760 rpm Core bit diameter mini-max 50-220 mm Connection thread 2 1/4″ unc Weight 13,5 kg Your name (*) Your E-mail (*) Subject Your message (*) All (*) fields are required. 2016-01-11