Related Clues:

• Beach sandal problem
• "True ___" (John Wayne movie)
• Coarse particles
• Abrasive material
• Tenacity
• Abrasive stuff
• Moral fiber
• Spine
• Perseverance
• Abrasive particles
• ''True ___'' (John Wayne movie)
• Sandpaper grade
• Sandy particles
• Sand and such
• Sand bits