4pcs Tungsten Carbide Rectangular Block Insert 5/8" x 3/16" x 1/16" for braising onto drill bits. 55A Alloy. 0.652" x 0.220" x 0.060" actual dimensions. 2 grams each.
Can also be used for weights for Pinewood Derby Cars. Twice as dense as steel, 14.18 g/cc.
Will combine shipping with any other item I sell. Same-day shipping.