stainless steel epoxy coated cable ties-O lock type have a flat and low profile head(no sharp edge)for easy installation.As for larger slot at the end, it allows the use of a hook-type tool. It has uncoated version for high temperature applications.· Technical information                        · Material: Stainless Steel Grade 304 or 316 · Coating: Polyester/Epoxy, Nylon 11,PPA · Working Temp: -80℃ to 130℃ · Description: Black Strap With Metallic Buckle · Flammability: Fireproof · Other Properties: UV-resistant, Halogen free, non toxic