Diamond Blade (for Crystal Cutter) 4 pcs.

Purchased over 20 years ago for use with a Maruto crystal cutter, these items have been stored as spares in my tool cabinet.
Regarding the posted images: The blades are coated with rust-preventive grease and were photographed while still in their plastic bags, which may cause some slight blurriness.
Product Contents:
★1 Diamond Kimberley Type Blade (Unopened, Unused)
[Features]
The outer circumference of the high-rigidity, high-precision base material is continuously formed with a layer of diamond abrasive grains and metal bond. This ensures consistent contact with the material being cut, resulting in high processing accuracy.
This is a highly versatile cutting wheel with excellent strength, wear resistance, abrasive retention, and durability.
[Applications]
Precise small-scale cutting of valuable samples such as gold, silver, semiconductors, magnetic materials, ceramics, minerals, single crystals, and amorphous materials like glass.
Size: Diameter 157mm x Thickness 0.8mm x Inner Diameter 30mm
★2 Diamond MS Blade (Unopened, Unused)
[Features]
Same structure as the Kimberley type. The abrasive grains are finer to minimize chipping at low rotational speeds.
[Applications]
Cutting materials prone to chipping, such as minerals and glass. Electronic components containing some metals, composite materials, and hard-brittle new materials.
Diameter 150mm x Thickness 0.6mm x Inner Diameter 30mm
★3 & 4 Special Cutting Blades, 2 Chip Saw Blades
H6-909: (Unopened, Unused)
H6-406: (Opened for inspection, Unused)
[Features]
These are saw-blade style cutting blades with carbide tips brazed onto a carbon steel base.
[Applications]
Rough cutting of samples of organic composite materials, non-ferrous metals such as aluminum alloys, etc.
Diameter 150mm x Thickness 2.0mm x Inner Diameter 30mm
Number of Teeth: 40
Reference Price: Currently discontinued. Similar products include:
Kimberley Type Blade; Product Code 16-0427 (150x0.8x30) ￥38,000
MS Blade; Product Code 16-1514 (150x0.6x30) ￥50,000
Chip Saw Blade; Product Code 16-2206 (150x2.0x30) ￥34,000/piece
(Maruto General Catalog, pages 26, 27)
These are new old stock items that have been stored for a long time. The images show everything, so please examine them carefully before considering your purchase.