Material: LDPE (low density polyethylene / soft polyethylene). Is an economical cable tie for light loads that is releasable and reusable. For indoor use. Silicone-free. Resistant to oils, greases and automotive fuels. Tensile force PKBLR 3.5x120: 70x100 N. Tensile force PKBLR 3.8x240: 135x200 N. Tensile force PKBLR 4.4x320: 155x250N. Tensile force PKBLR 5, 6x500: 275x350 N.