Aluminum Oxide Silversmiths' Flat Double Tapered Stone 4" x 1/2" - 1/4" x 5/16" - 1/8" Made in the USA you will be getting the

you will be getting the same thing

The Cotpyr is 200mm x 60mm

A role of Test Media should be inside

The Norton IM313 System includes three 11-1/2" x 2-1/2" Norton Stones

The exterior of the unit is made of durable black plastic

Aluminum Oxide Silversmiths' Flat Double Tapered Stone 4" x 1/2" - 1/4" x 5/16" - 1/8" Made in the USA you will be getting theAluminum Oxide Stones Aluminum oxide stones excel at refining surfaces, offering a finer finish than silicon carbide stones. Their durability and ability to hold their shape well make them ideal for touching up special instruments, cleaning tools and dies, and for honing to close tolerances. These stones are a good choice when a high quality finish and accuracy are critical. Oil Filled These Aluminum Oxide Stones are filled with oil in manufacturing,