GSX Options - Swing away back gauge GSX - Polyvalent & Budgetable Shear The hydraulic guillotine shears of the GSX range are driven  by top mounted cylinders. Our long experience in the production of hydraulic guillotine shears guarantees a product of exceptional design and great efficiency. The fully open rear side provides the operator the possibility of easy removal or adapting different conveying systems to the machine. The all-welded interlocked construction makes the  machine virtually indestructible. The GSX shears are well equipped and have as standard the SC101 T controller.