Three In One (Polisher-Grinder-Drill) MODEL NO. H.P. K.W. R.P.M. PHASE WHEEL SIZE & CHUCK SIZE SPINDLE LENGTH SPINDLE DIAMETER APPROX WT. KG. RPGD-1 0.25 0.18 2800 3 100x20x19.05 3/8 - 24 UNF 100 22 12 RPGD-2 0.5 0.37 2800 3 150x20x31.75 1/2 - 20 UNF 150 28 20 RPGD-3 0.25 0.18 2800 1 100x20x19.05 3/8 - 24 UNF 100 22 12 RPGD-4 0.5 0.37 2800 1 150x20x31.75 1/2 - 20 UNF 150 28 20 All diamensions are in mm.