3/4" weldtec ship auger. Bits are made stronger and last longer because a harder cutting edge is welded to the base material. 2X nail cutting life compared to standard Irwin ship augers. Patent Pending welded cutting edge for increased durability. Aggressive screw pitch for faster drilling. Wide flutes for maximum chip removal. 7/16" quick change impact shank for fast bit changes. Fully forged body on bits 3/4" diameter and larger for durability. Tubed. Diameter: 3/4", Overall Length: 17", Shank Diameter: 7/16" Hex, Type: Hollow Center No. 3043010: Diameter: 13/16", Overall Length: 17", Shank Diameter: 7/16" Hex, Type: Hollow Center No. 3043011: Diameter: 7/8", Overall Length: 17", Shank Diameter: 7/16" Hex, Type: Hollow Center No. 3043012: Diameter: 15/16", Overall Length: 17", Shank Diameter: 7/16" Hex, Type: Hollow Center No. 3043013: Diameter: 1", Overall Length: 17", Shank Diameter: 7/16" Hex, Type: Hollow Center No. 3043014: Diameter: 1-1/8", Overall Length: 17", Shank Diameter: 7/16" Hex, Type: Hollow Center ---- 1. 海外直輸入品となりますので、新品であっても、パッケージに多少のダメージがある場合もございますが、商品本体には問題ございませんのでご安心ください。2. 日本国内でのメーカーによる製品保証等は適用されません。3. パッケージや、説明書等は、英語表記となります。