Stainless steel housing for increased durability, high impact resistance and better blade protection The nylon-coated white blades provide extended blade life and increased readability The true-zero, 4-riveted hook offers superior strength The positiveblade lock and reverse button are standard All have a handy belt-clip Tapes are printed with 16 inch center and 19.3 inch rafter markings All 18 series tapes feature continuous inches Blade W InxL Ft=1x25 Finish=Hi Viz