PET-U 1/4 Inch Steel Parallel Set 1/4 x 6 Inch Accuracy 0.0002 Inch for Layout Work, Standard and Setup 9 Pairs

1/4 Inch Steel Parallel Group Made of High Quality Alloy Steel for Strong Durability 1/4 Inch Steel Parallel Sets for Layout Works, Standards and Setups Height: 3/4 to 1-3/4 inches, Accuracy: 0.0002 inches Comes with a plastic case for easy portability Package: 9 pairs of 1/4 x 6 inch precision parallel blocks