Fine alteration of the SMC Standard Air Cylinders can be performed by releasing the auto switch appended screw. Operability enhanced contrasted and the traditional auto switch set position change, where the entire switch mounting band requires slackening. Twofold foot and head rib have been added to the accessible mounting composes. SMC Standard Air Cylinders are available with simple fine modification of auto switch position. The auto switch mounting composes, band or rail can be chosen with the model number.