Description: 1pc： Specifications: Material: hard alloy Product size: 55*35*35mm/2.17*1.38*1.38" Weight: about 37g Blade width: 1/4" Diameter of handle of carving knife: 1/4" Packaging: individual plastic box packaging Usage: 6.35mm/0.25" center shaft, used in electric and manual engraving machine. The 6.35mm/0.25" handle can be clamped by self-tightening to carve the machine and product. Included ： 1 x Router Bit 4pcs： Specifications: Material: hard alloy Product size: as shown Weight: about 120g Blade width: 1/8"-1/2" Diameter of handle of carving knife: 1/4 "; Packaging: individual plastic box packaging Usage: 6.35mm/0.25", 12.7mm/0.5" center shaft, used in electric and manual engraving machine. The 6.35mm/0.25" handle can be clamped by self-tightening to carve the machine and product. Included ： 4 x Router Bit 12pcs： Specifications: Material: hard alloy Product size: As shown in the label (D is the diameter of the router bit; R is the carpenter's molding radius). Weight: about 300g Blade width: 6.35mm-32mm/0.25"-1.26" Diameter of handle of carving knife: 1/4" Packaging: individual plastic box packaging Usage: 6.35mm/0.25" center shaft, used in electric and manual engraving machine. The 6.35mm/0.25" handle can be clamped by self-tightening to carve the machine and product. Included ： 12 x Router Bit 15pcs： 100% brand new and high quality. TCT tipped bits can be resharpened Set contains a selection of popular bit profiles Smooth accurate cuts Sealed bearings 1/2" shank,sealed bearings,smooth accurate cuts. Supplied in handy wooden storage case Specification: Material: Metal Color: As pictures show Included ： 15pc/set * Woodwork cutter tool 35pcs： Specifications: Material: hard alloy Aluminum box size: 350*180*90mm/13.78*7.09*3.54" Product weight: 1000g Outer box weight: 1700g Packaging: high-grade aluminum box packaging. Carving knife head width: 3/16 "-3/4" Carving knife handle diameter: 1/4"(6.35mm) Color:Blue/Yellow included： 35 x Router Bits