Description：
[Precision Block Material] Precision block is a hexahedron which is made of hardened steel. Ground and hardened on all sides.idea for mounting work for precision, giving you convenient using experience.
[Ultra Precision] The parallel block matched accuracy .0002",Hardness 56 to 60 RC,There are 23 holes in it.5 holes are trapped 3/8-16 threads for clamping and others are untrapped.
[Applicability] The 1-2-3 blocks are important for machinist as industrial equipment accessories. These 1-2-3 "blocks are used for clip support, installation design and inspection work.
[Wide Use] The hardened steel blocks are suitable for all kinds of machine tools, meanwhile, fine workmanship ensures the high precision of the product.The multi-use gauge gage machinist tool is used for placing circular work-pieces such as shafts, sleeves, disks, etc.
[Packaged Included] The package contains two precision blocks. The size approx 2.5 x 5 x 7.5cm.

Specifications:
Material: Hardened steel
Color: Silver
Size(L*W*H): 2.5 x 5 x 7.5 cm/ 1" x 2" x 3"
Quantity: 1 Pair (2 pcs)
Accuracy: 0.0002in
Hardness: 56 to 60 RC

Packaged included:
2 x Precision Blocks