They are machined from 304 Stainless Steel
All Terminator Muzzle brakes have flats for a spanner and so they can easily be fitted by a Gunsmith.
It is recommended the rear of the brake be tapered down to the muzzle diameter.
The standard T7 thread is M36 x 1.5
The dimensions are 62mm, 2.44 ” diameter, 180mm, 7.09” long, weight is 1.695 Kg, 59.78oz
The T7 has a 14mm through hole for .510, 50 BMG & requires opening up to 0.030″ – 0.040” over bore size when fitted to larger calibres