1 X 2 X 3" Blocks with no holes are matched pairs that have nearly identical dimensions. Made of hardened tool steel and precision ground on all six sides. They are ideal for spacing work pieces up off the milling table or supporting them clamped to an angle block. They are similar to and can be used as parallels, but are more stable and may be used outside a vise.1-2-3 Precision machinist milling blocks dimensions: 1" x 2" x 3".Weight: 3.5 lbs.