12K7990 - 1/4-20 Parts Kit, 149 pcs.
A bargain on a popular 149-piece assortment of jig and fixture hardware, this kit is conveniently organized in a storage box. The price of the components purchased individually would add up to more than $160, and the parts count isn't "padded" with inexpensive parts – the kit is well balanced with a broad assortment of pieces in rational proportions.
It contains 60 T-bolts (20 each of 1" and 1 1/2" sizes, and 10 each of 2 1/2" and 3 1/2" sizes); 16 four-prong T-nuts; 16 threaded inserts; 10 round insert knobs (1"); six each of 2" T-insert knobs, four-arm insert knobs and four-arm bolt knobs; four each of five-arm insert knobs and five-arm bolt knobs; and 20 washers. The tough polypropylene case measures 13 1/4" × 8 3/4" and has 2" deep compartments with moveable dividers.
WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause Reproductive. For more information, go to www.P65Warnings.ca.gov (opens in new tab).

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149-Piece 1/4-20 Jig & Fixture Parts Kit
A bargain on a popular 149-piece assortment of jig and fixture hardware, this kit is conveniently organized in a storage box. The price of the components purchased individually would add up to more than $160, and the parts count isn't "padded" with inexpensive parts – the kit is well balanced with a broad assortment of pieces in rational proportions.
It contains 60 T-bolts (20 each of 1" and 1 1/2" sizes, and 10 each of 2 1/2" and 3 1/2" sizes); 16 four-prong T-nuts; 16 threaded inserts; 10 round insert knobs (1"); six each of 2" T-insert knobs, four-arm insert knobs and four-arm bolt knobs; four each of five-arm insert knobs and five-arm bolt knobs; and 20 washers. The tough polypropylene case measures 13 1/4" × 8 3/4" and has 2" deep compartments with moveable dividers.