Safe Way Traction 6" X 24" Black Anti Slip Stair Tread Non Skid (60-Grit) Safety Tape with Glow in the Dark Stripe Package of 3 Treads 84613-3 Package of 3 Treads with clearly visible glow-in-the-dark stripe 60 Grit Abrasive Grain Provides a consistent co-efficient of friction. Safely identifies steps during power failure Non-toxic/Non-radioactive / Rechargeable from any light source Apply to smooth surfaces and avoid all grout lines.