Tool Kits By LuckyHigh

6pcs Square Hole Drill Bit Tools High Speed Steel HSS Woodworking Adjustable Mortise Chisel Drill Bit Set, Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8" - Product Features
  • 6 Sizes square hole mortise chisels: 1/4\"(6.4mm), 5/16\" (8mm), 3/8\" (9.5mm),1/2\" (12.7mm),9/16\" (14mm), 5/8\"(16mm). These various sizes square drill bits can meet your most needs.
  • Mortising chisels are made of heat treatment, HRC48~50 high-speed steel.
  • These mortise chisels are only used to drill square hole and keyhole drill, mainly for woodworking aspects
  • Don't use them on an electric drill, bench drill.
  • They are great tools to reduce construction workers' labor intensity and construction costs
 


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