4 pair 6” long which includes:1 pair 3/16 x 1” with 5/16” holes1 pair 3/16 x 1 1/4” with 3/8” holes1 pair 3/16 x 1 1/2” with 7/16 holes1 pair 3/16 x 1 3/4” with 1/2 holes±0.0003" in parallelism on 2 sides, top and bottom±0.001” allowance on...