The housings of the element sizes DW-C 15 to 38 are made out of light alloy profile and are equipped with lateral fixation flanges, including the required fixation bores for direct mounting on customers machine part. Inner square sections made out of light alloy profile with four small through bores or one central through bore. Levers can be mounted on one or on both sides by means of bolts. Type DW-C with central through bore. The frictional force of this type assures a safe fixation of lever arms in any position. All metal parts are paint-finished.