The SL-4 tungsten carbide burr has a taper (tree) shape with a radius end and standard double cut flutes. It features a 14-degree tapered body with a radius (rounded) end. The tapered body reaches into corners and along angled surfaces, while the rounded tip blends the cut into fillets — a shape for contour deburring, weld dressing and surface shaping on steel, stainless steel and cast iron.
SL-4 Tungsten Carbide Burr Taper Shape With Radius End

|
Item |
Value |
|
Shape |
Taper (Tree) with Radius End |
|
Cut Type |
Standard Double Cut |
|
Cut Diameter |
1/2" |
|
Length of Cut |
1-1/8" |
|
Overall Length |
3" |
|
Shank Diameter |
1/4" |
|
Head/Shank |
Brazed |
|
Working Speed |
10,000–20,000 rpm (by material) |
Run it in a die grinder or flexible shaft machine at 10,000–20,000 rpm depending on the material — stay near the low end for stainless and hardened steel, higher for mild steel and cast iron. Double cut flutes break chips fast and remove stock quickly; for aluminium and other soft, sticky alloys, choose a single cut or Aluminum cut burr instead.
Other Available Sizes Related to Type L Carbide Burrs Both in Metric and Inch Standard:
| Metric Standard | ||||||
| Shank Dia. (mm) | Cutter Dia. (mm) | Length of Cut (mm) | Overall Length (mm) | Included Angle | Tool No. | The Combination of Head and Shank |
| d2 | d1 | l2 | l1 | |||
| 3 | 3 | 13 | 38 | 8° | L0313 | Solid |
| 5 | 13 | 38 | 10° | L0513 | Brazed | |
| 6 | 13 | 48 | 10° | L0613 | Brazed | |
| 6 | 6 | 16 | 51 | 14° | L0616 | Brazed |
| 8 | 22 | 70 | 14° | L08254 | Brazed | |
| 10 | 25 | 70 | 14° | L1025 | Brazed | |
| 12 | 28 | 73 | 14° | L1228 | Brazed | |
| 16 | 33 | 78 | 14° | L1633 | Brazed | |
| 19 | 38 | 83 | 14° | L1938 | Brazed | |
| 8 | 12 | 28 | 73 | 14° | L1228 | Brazed |
| 16 | 33 | 78 | 14° | L1633 | Brazed | |
| 19 | 38 | 83 | 14° | L1938 | Brazed | |
| Inch Standard | ||||||
| Shank Dia. (inch) | Cutter Dia. (inch) | Length of Cut (inch) | Overall Length (inch) | Included Angle | Tool No. | The Combination of Head and Shank |
| d2 | d1 | l2 | l1 | |||
| 1/8'' | 1/8'' | 1/2'' | 1-1/2" | 8° | SL-42 | Solid |
| 1/4'' | 1/4'' | 5/8" | 2" | 14° | SL-1 | Brazed |
| 5/16" | 7/8" | 2-3/4" | 14° | SL-2 | Brazed | |
| 3/8'' | 1-1/16" | 2-15/16 | 14° | SL-3 | Brazed | |
| 5/8'' | 1-5/16" | 3-1/16" | 14° | SL-5 | Brazed | |
| 5/8'' | 1-7/16" | 3-1/5" | 14° | SL-6 | Brazed | |
| 3/4'' | 1-5/8" | 3-3/8" | 14° | SL-7 | Brazed | |
Customization:
Cut Selection Guide:
| STANDARD CUT(M) |
STANDARD DOUBLE CUT (X) |
WIDE CUT (C) |
FINE CUT (F) |
ALUMINUM CUT(W) |
DIAMOND CUT(D) |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |