Feature:1. The drill bit is forged with bearing steel and is heat treated as a whole, with high hardness and long service life.2. U-shaped long chip flute design, easy to discharge wood chips, improve drilling efficiency.3. Drill sleeve design, the force of the drill sleeve blade is on the same plane, which effectively protects and avoids bursting at the beginning of use.4. Universal handle shape, the drill tail adopts a circular design, which makes the clamping more stable.5. Suitable for wood products such as density board, MDF, particle board, wood, etc., suitable for square hole drills, square tenon machines.Specification:Condition: 100% Brand NewItem Type: Square Hole Drill BitMaterial: Bearing SteelModel: 14mm/0.55in / 16mm/0.63in / 18mm/0.71in / 19mm/0.75inApplication: Suitable for wood products such as density board, MDF, particle board, wood, etc., suitable for Square hole drills, Square tenon machines Specification Square Hole SizeHandle Diameter Grooving Depth Total Length Weight9/16(14mm) 14mm / 0.6in 10mm / 0.4in 75mm / 3in 220mm / 8.7in 280g / 9.9oz5/8(16mm) 16mm / 0.6in 12mm / 0.5in 75mm / 3in 220mm / 8.7in 280g / 9.9oz3/4(18mm) 18mm / 0.7in 12mm / 0.5in 75mm / 3in 220mm / 8.7in410g / 14.5oz 3/4(19mm) 19mm / 0.7in 12mm / 0.5in 75mm / 3in 220mm / 8.7in410g / 14.5oz Package List:1 x 14mm Square Hole Drill Bit1 x 16mm Square Hole Drill Bit1 x 18mm Square Hole Drill Bit1 x 19mm Square Hole Drill BitNote:1. Please allow slight err