Features: Precision machined, alloy steel taps and dies. Dies are split to facilitate the fine adjustment of core diameter. Set includes imperial coarse and fine sizes. Also includes sliding jaw type tap wrench and T-bar type tap wrench together with steel die holder with knurled screws. Supplied in heavy-duty carry-case. Specifications: Model No: AK303IMP Contents: Taps & Dies; National Fine - 1/4" x 28, 5/16" x 24, 3/8" x 24, 7/16" x 20, 1/2" x 20, 9/16" x 18, 5/8" x 18, 3/4" x 16, 7/8" x 14, 1" x 14, National Course - 1/4" x 20, 5/16" x 18, 3/8" x 16, 7/16" x 14, 1/2" x 13, 9/16" x 12, 5/8" x 11, 3/4" x 10, 7/8" x 9, 1" x 8, Tap Wrench, Die Holder, T-Bar Type Tap Wrench, Screwdriver, Spacer Height: 356 Width: 410 Length: 68