2pcs/set 25-50-75mm Hardened Steel Blocks 0.005″ Precision Matched Machinist 123 Milling Tool 23 Holes 1-2-3″ block gauge

Material: Hardened steel

Size: approx. 2.5*5*7.5 cm/ 1*2*3″(L*W*H)

Idea for mounting work for precision.

It is a hexahedron which is made of hardened steel.

Ground and hardened on all sides.

Used for set-up, layout and inspection jobs.

Suitable for all kinds of machine tool.

Height accuracy .0001″.

Hardness HRC 57-62.

23 holes includes (5) 3/8-16 threaded holes for clamping and (18) untapped holes.

The unique design makes your work smoothly.