Spotcheck® SKL SP2 Solvent Removable Penetrant, 1 gal, Can ORS NASCO Provides cadmium plated D ring for Provides cadmium plated D ring for connection to fall arrest lanyard or lifeline and special red sheering bolt that falls off to expose a green bolt when proper torque is reached Removable and partial reusable This simple to use concrete anchor is designed to be set into holes drilled in 3 functional headgear uses a constant fit rubber headband for frequent re adjustments as pipe welders move about their work Solvent removable red color contrast penetrant Offers maximum reliability in locating surface open flaws and discontinuities Has been successfully used on non porous ceramics and other similar materials