ASGE
636
Lightweight, handy 3/8 in. capacity tapper with electronic
speed control, kinetic grip and with floating jaw chuck
for tapping and thread forming. Chucks are NOT included in the Price
ASGE
648
Powerful 1/2 in. capacity tapper with electronic speed
control, D-handle and with floating jaw chuck for tapping
and thread forming. Chucks are NOT included in the Price
FEIN Tools 
280
Watt
0-580/min
3/8
Inch
3.5
lbs.