7 SHEET METAL WORKING MACHINES, NAMELY, SHEET CUTTING MACHINES, PUNCHING MACHINES, NOTCHING MACHINES, CRIMPING OR BENDING MACHINES, SPECIAL MACHINES FOR SHEET METAL WORKING, INCLUDING PARTS OF THESE MACHINES AND ACCESSORIES, NAMELY, MECHANICALLY, PNEUMATICALLY AND HYDRAULICALLY OPERATED TABLE STOPS, MECHANICAL CUTTING, PPUNCHING, NOTCHING AND CLAMPING TOOLS; FRICTION BRAKES AND FRICTION CLUTCHES (NOT FOR LAND CRAFTS); CLAMPING AND CLUTCH TOOLS FOR WINDING SPINDLES