Check the listing for details. 5Pcs 6" inch Super-thin Diamond Lapidary Saws Blade Cutting Disc Slab Arbor 1/2". Color: Silver, Condition: New. Listed at 19.99 USD. 5Pcs 6" inch 150 mm Super-Thin Diamond Lapidary Saw Blade Jewelry Gemstone Cutting Disc with Arbor Hole 1/2" Code 150*0.28*12.7mm Product Specification: Product Name: 6 inch diamond saw blade, 150mm diamond blade, Lapidary diamond saw Outside Diameter : 6" (150 mm) Arbor Hole: 1/2" (12.7mm) Only suitable for machines with arbor 1/2", and arbor 5/8" of machine can't be installed Core Thickness: 0.011" (0.28 mm) Rim Thickness: 0.014" (0.36 mm) on the edge where the diamond is. Recommend RPM: 2800 RPM Quantity: 5 Pcs Product Description: Exclusively designed for processing materials for softer high value rocks like turquoise, gaspeite, opals. These blades are manufactured by crimping synthetic diamonds directly into the edge of the saw blade. They are best suited for turquoise, opal, glass, and stones in the 4-6 range on the Mohs hardness scale. We don't recommend using this blade to cut too hard materials, such as: agate and jadeite with a Morse hardness of 6-7. Because it is difficult to cut or the blade will be damaged quickly Advantages: achieving satisfactory cutting results and reducing unnecessary material consumption. This thin diamond lapidary saw blade offers a very good cost effective option for those that want either very thin kerfs or plan on short term use. Used for Trimming: They are excellent for trimming small shapes into stones. This simply means that these blades are meant for small material, not large or slabbing techniques. Also, these blades operate in a single direction so make sure that the arrow on the blade is pointed towards you when mounting. Use with water as a lubricant New, Unused Blade - Not in Original Packaging These blades were originally packaged in oil so you will see several oil spots on the surface. We will send out your order within 1-2 days after payment has been received and cleared. Please let us know if you are looking for other accessories or hardware. We Can List Any Size( Outer Diameter from 60mm - 250mm) & Amount Of This Product