Specimen holder for 1-1/2″ and 40mm metallographic mounts and other cylindrical 1-1/2″ diameter samples.
Holder height is 0.33″ (8.4mm) with a recessed area 0.15″ (3.8mm) deep.

Open sides for easier sample removal.

Made of machined aluminum with two stainless steel Allen screws (M3 x 6mm and M3 x 12mm) and Allen wrench included.
Also shown on right holding a specimen (not included).