Bosch Brand :

GDB180WE : 2200w, Max. Core dia 180mm, Suitable for wet drilling, Weight 5.2kg

GDB350 : 3200w, Max. Core dia 350mm, Suitable for wet drilling, Weight 11.9kg

GCR180 (Stand) : Drilling dia 180mm, Working length, Z axis 455mm, Column length 767mm, Drill stroke 514mm, Weight 9.5kg

GCR350 (Stand) : Drilling dia 350mm, Working length, Z axis 550mm, Column length 955mm, Drill stroke 580mm, Weight 12.6kg

Chinese Brand :

ZIZ-SLD02-160 : 2380w, Max. Core dia 160mm, No load speed 200r/min

ZIZ-SLD200 : 3960w, Max. Core dia 200mm, No load speed 700r/min

ZIZ-SLD300 : 4500w, Max. Core dia 300mm, No load speed 480r/min