Bit Kits
AT-BK18-Blue: Includes: (4) "Blue" tungsten/carbide coupon retaining pilot bits and spare wire. Best for PVC, Ductile/Cast Irons, and A.C. water mains. (underground) *For Hard Steel Pipe, order one of the "Gold" bit kits* Designed for: all 18" and longer drill rods and 13" Drill Rods with threads on the end. AT-BK13-Black: Includes: (4) "Black" tungsten/carbide coupon retaining pilot bits and spare wire. Best for PVC, Ductile/Cast Irons, and A.C. water mains. (underground) *For Hard Steel Pipe, order one of the "Gold" bit kits* For 13" drill rods with hex on end. AT-BK18-Gold: Includes: (3) "Gold" high alloy pilot bits. (2) "Blue" tungsten/carbide coupon retaining pilot bits and spare wire. Best for; sched. 40/80 steel, Stainless steel, copper, etc. For 18" & 24" drill rods. NOTE: This is a two-step process. The gold pilot bit is used to penetrate the pipe wall and it needs to be switched with the blue pilot bit to catch the coupon. AT-BK13-Gold: Includes: (3) "Gold" high all