This system allows consistent and repeatable sharpening based on the selected radius. Each option influences skating performance—from maximum grip to maximum glide. The wide range of values lets skaters fine-tune their setup according to their style and ice conditions.
Precisely defined hollow
Each ring delivers a specific blade profile for consistent performance.
Wide range of options
From deep hollows for maximum grip to flat profiles for maximum glide.
Sparx compatibility
Designed for ES200 and ES300 machines.
Consistent sharpening results
Ensures repeatable blade performance.
Each ring corresponds to a specific hollow affecting blade-to-ice contact.
Ensures even sharpening and long-term accuracy.
| Radius (mm) | Label | Character |
|---|---|---|
| 6.35 | 1/4" | maximum grip (deepest hollow) |
| 7.9 | 5/16" | very high grip |
| 9.5 | 3/8" | high grip |
| 11.1 | 7/16" | increased grip |
| 12.7 | 1/2" | medium grip |
| 14.3 | 9/16" | balanced grip / glide |
| 15.9 | 5/8" | all-round setting |
| 17.5 | 11/16" | slightly more glide |
| 19.1 | 3/4" | lower grip, more glide |
| 20.6 | 13/16" | increased glide |
| 22.2 | 7/8" | high glide |
| 23.8 | 15/16" | very high glide |
| 25.4 | 1" | strong glide |
| 28.6 | 1 1/8" | maximum glide (flat feel) |
| 31.8 | 1 1/4" | maximum glide |
| 38.1 | 1 1/2" | extreme glide |
| 44 | 1 3/4" | minimal grip |
| Flat | Flat | no hollow (maximum glide) |
Designed for hockey players and skaters who want full control over blade sharpening and skating performance.
| Manufacturer |
![]() |
| Radius |
6.35
20.6
Flat
7.9
9.5
11.1
12.7
14.3
15.9
17.5
19.1
22.2
23.8
25.4
28.6
31.8
38.1
44
|
We will notify you by email when the product is in stock.
Save us to your home screen and get quick access to our store anytime – just like an app.



