KEYSTONE

3/32 Shank HP · Sintered Diamond

Manufacturer item # 1290670  ·  USDD item # 034-1290670  ·  Variant Sintered Diamond

Shank3/32" HP — lab bench use

AbrasiveSintered Diamond grit (REAL Diamond, not flute pattern)

Grit gradesStandard / Coarse / Super-Coarse (SC)

Use environmentLaboratory bench — straight HP handpiece

Compatible withZirconia, lithium disilicate, porcelain, glass-ceramic

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Overview

KEYSTONE Sintered Diamond Burs are HP-shank lab bench Burs with REAL Diamond grit bonded into a Sintered metal matrix — designed for cutting and shaping hard ceramic materials that carbide cannot touch: zirconia, lithium disilicate, feldspathic porcelain, and glass-ceramic restorations. The Diamond grit is the active cutting media; the Sintered matrix holds the grit firmly through the bur's life.

(Sintered Diamond is distinct from "Diamond-Cut" carbide, which is a flute pattern on a tungsten-carbide bur — that designation is about flute geometry, not Diamond material. Sintered Diamond = actual Diamond grit. Use these on ceramics; use carbide on acrylic, gold and base metals.)

• Real Diamond grit, Sintered matrix. Cuts zirconia, lithium disilicate, porcelain — materials carbide cannot touch.
• Grit-grade options. Standard, Coarse, and Super-Coarse (SC) for rough reduction through to finishing.
• 3/32" HP shank. Fits every lab straight handpiece on the bench.
• Multiple head shapes. Round, cone, cylinder, taper, knife-edge for full ceramic contouring coverage.
• Long bur life. Sintered matrix holds the grit firmly — no early grit loss like electroplated diamonds.

Technical specifications

Material & regulatory

KEYSTONE HP-shank Sintered Diamond Burs are laboratory bench tools, not intraoral medical devices. Intended for use by dental technicians on bench straight handpieces. Manufactured by KEYSTONE Industries.

Compare with cross-brand alternatives

Looking for alternatives? Here are equivalent products from other manufacturers carried by USDD, serving the same clinical or laboratory purpose. The KEYSTONE Industries 3/32 Shank HP row is highlighted at the top.

Order this Sintered Diamond bur

Available now from US Dental Depot. Request a custom quote for volume orders or speak with a product specialist for compatibility questions and clinical guidance.