Adjustable hand reamer 7 piece set Carbon steel blades New & packed reamers ! Sizes: one each size hv to h3 1/4 9/32 (6.35 7.14mm) - hv 9/32 5/16" (7.14 7.94mm) - hw 5/16 11/32" (7.94 8.73mm) - hz 11/32 3/8" (8.73 9.52mm) - hy 3/8 13/32 (9.52 10.32mm) - h1 13/32 7/16" (10.32 11.11mm) - h2 7/16 15/32" (11.11 11.91mm) - h3 With six blades of each size ! All reamers are packed in a fitted Pouch Product description Each reamer expands to the smallest size of next larger size Reamers are used for light cut, repair work, removing stock or simply for enlarging holes Reamers can be hand operated by use of wrenches. The size can be adjusted by moving the blades in tapered slots by means of loosening one nut and tightening the other Blades are ground.