2010 Straightline Drill 16 Inch 4 Cone Rock Reamer Setup For 2 7/8 In. If Rod. Can Be Adapted To Fit Other Machines. The Cones Are In Great Shape And The Carbide Has Minimal Wear. The Bearings In The Cones Are Tight And Have No Play. This Reamer Was $12,500.00 New And Has Been Used Very Little. Make Offer., To Fit Make: DITCH WITCH, To Fit Model: JT4020AT, Jt4020, Jt3020 Mach 1, Jt2720at Mach 1, Jt7020, Jt7020 Mach 1