Part # : Groz-Beckert DPX17 Gebedur Titanium (the alternative part number are DPX17, 135X17, 2167, SY3355, 335-03117) THIS LISTING INCLUDES : Box of 100 Groz-Beckert GEBEDUR Titanium Coated Industrial Sewing Machine Needles for Walking Foot Industrial Upholstery Machines. GEBEDUR stands for Groz-Beckert needles with titanium nitride coating. The titanium nitride coating on the surface is extremely hard so the needle is extremely well protected against damage and wear, especially at the point of the needles. Groz-Beckert Gebedur Tintanium needle features : Higher processing security Less material damage Less needle deflection, resulting in less skipped stitches, thread braking and needle breakage Higher productivity due to less downtime of the machine. *A needle system is a group of needles made to fit specific sewing machines. All needles in a system are of the same length and shank size, but are of various diameters. Lower size numbers are narrower or thinner needles used for lighter materials. Higher size n