Derrick Surveying Tape, 1 4 in x 100 ft, E1 ORS NASCO Exhalation valve HandyStrap® with buckle allows Exhalation valve HandyStrap® with buckle allows mask to comfortably hang around neck when not in use Soft foam face cushion eliminates pressure points for added comfort Ventex® valve lets the hot air out faster so workers breathe easier and use fewer masks Create instant connection points to easily tether tools Made from a self fusing silicone rubber that leaves no adhesive residue behind when removed Conforms to the shape of whatever it is applied to Chrome Clad® blade Extra large winding drum provides rapid line recovery and permits tape line to be easily detached from reel Special hook ring with ribbed face at zero Leather thong is provided to use through eye at rear when tape is removed from reel