Crosstech 845KR Modified Shoulder Diamond Bur, FG – Pack of 5
- Free shipping over $50 in Canada
- Secure checkout
- Ships from Laval, QC
Product Overview
The Crosstech 845KR modified shoulder diamond bur is a friction grip (FG) multi-use diamond bur from Crosstech Canada, listed in the Crosstech 2026 catalog under ISO No. 845KR (ISO shape no. 168KR). It is offered in 3 head sizes, with a choice of grit and regular or short FG shank. Modified shoulder diamonds are commonly used for crown preparations with rounded shoulder margins.
Sold as a pack of 5 burs. Select the options below; each combination has its own Crosstech product code.
Key Features
- Natural diamond – Crosstech states its multi-use diamonds are manufactured with natural diamonds
- Multi-coating – Crosstech states a Swiss multi-coating technique is used
- Heat-treated one-piece stainless steel shank (per Crosstech)
- Colour-coded grit – grit identified by colour band (see grit guide below)
- Pack of 5 burs per variant
Specifications
- Manufacturer / brand: Crosstech (Crosstech Canada)
- Bur type: Diamond
- Shape: Modified Shoulder
- ISO No.: 845KR
- ISO shape no.: 168KR
- Size options: 016 – Ø1.6 mm (tip 1.3) × 4 mm, 018 – Ø1.8 mm (tip 1.5) × 4 mm, 025 – Ø2.5 mm (tip 2.0) × 4 mm
- Grit options: Super Coarse, Coarse, Standard, Fine, Extra Fine, Gold, Gold Super Coarse, Gold Coarse, Gold Fine
- Shank options: Regular FG, Short FG
- Shank: Friction grip (FG) – regular (FG 31) and/or short (FG 33) as listed per size
- Package quantity: 5 burs per pack
Grit Colour Guide
Crosstech colour-codes diamond grit as follows: super/extra coarse – black, coarse – green, standard – blue, fine – red, extra fine – yellow. Gold-series codes follow the Crosstech catalog.
Available Variants & Ordering Codes
| Size | Grit | Shank | Crosstech code (SKU) |
|---|---|---|---|
| 016 – Ø1.6 mm (tip 1.3) × 4 mm | Super Coarse | Regular FG | A16RLXC |
| 016 – Ø1.6 mm (tip 1.3) × 4 mm | Coarse | Regular FG | A16RLC |
| 016 – Ø1.6 mm (tip 1.3) × 4 mm | Standard | Regular FG | A16RL |
| 016 – Ø1.6 mm (tip 1.3) × 4 mm | Fine | Regular FG | A16RLF |
| 016 – Ø1.6 mm (tip 1.3) × 4 mm | Extra Fine | Regular FG | A16RLP |
| 016 – Ø1.6 mm (tip 1.3) × 4 mm | Gold | Regular FG | GA16RL |
| 016 – Ø1.6 mm (tip 1.3) × 4 mm | Gold Super Coarse | Regular FG | GA16RLXC |
| 016 – Ø1.6 mm (tip 1.3) × 4 mm | Gold Fine | Regular FG | GA16RLF |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Coarse | Regular FG | A162C |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Standard | Regular FG | A162 |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Gold | Regular FG | GA162 |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Gold Super Coarse | Regular FG | GA162XC |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Super Coarse | Short FG | MA162XC |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Coarse | Short FG | MA162C |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Standard | Short FG | MA162 |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Fine | Short FG | MA162F |
| 018 – Ø1.8 mm (tip 1.5) × 4 mm | Extra Fine | Short FG | MA162P |
| 025 – Ø2.5 mm (tip 2.0) × 4 mm | Super Coarse | Regular FG | A16RLLXC |
| 025 – Ø2.5 mm (tip 2.0) × 4 mm | Coarse | Regular FG | A16RLLC |
| 025 – Ø2.5 mm (tip 2.0) × 4 mm | Standard | Regular FG | A16RLL |
| 025 – Ø2.5 mm (tip 2.0) × 4 mm | Fine | Regular FG | A16RLLF |
| 025 – Ø2.5 mm (tip 2.0) × 4 mm | Extra Fine | Regular FG | A16RLLP |
| 025 – Ø2.5 mm (tip 2.0) × 4 mm | Gold Coarse | Regular FG | GA16RLLC |
| 025 – Ø2.5 mm (tip 2.0) × 4 mm | Gold Fine | Regular FG | GA16RLLF |
Purchasing Information
Crosstech burs from NNA Medical, a Canadian dental supply store. Product codes, sizes and specifications are taken from the Crosstech 2026 catalog. Product images are taken from the Crosstech catalog and show the bur shape and size; the grit colour band may not be shown.
Shipping
Free shipping on orders over $50 within Canada. Canadian orders under $50 ship at our standard rates, and orders outside Canada are charged shipping at checkout. See our shipping policy.
Returns
Unused items in their original packaging can be returned within 30 days of delivery. For hygiene reasons, opened disposables and used instruments can't be returned. See our return policy.
Questions about this product?
Our team is happy to help. Call 514-572-6886 or email nna.medical@gmail.com.