Warner Manufacturing 6 ProGrip Flexible Board Knife with Hammer Cap"

Features: 

• Flex blade that works great with heavier spackles and compounds
  
• Standard carbon steel hollow-ground blade to provide consistent flex and proper stiffness.
  
• Comfortable soft grip ergonomic handle for extended usage periods
  
• Full tang blade to prevent blade breakage
  
• Tapered handle design making the tool easier to clean after usage
  
• Safe to use with chemical solvents