Tools No. 901 and 903 form semi-circular corrugations at 9mm centres. For additional grip on steps.
Tools No. 904 and 905 form an 8mm x 16mm recess that can be filled with non-slip grit.
| Type | Description | No. of Grooves |
|---|---|---|
| 901 | Groover that forms semi-circular corrugations at 9mm centres | 3 |
| 903 | Groover that forms semi-circular corrugations at 9mm centres | 5 |
| 904 | Groover that forms an 8mm x 16mm recess | 1 |
| 905 | Groover that forms an 8mm x 16mm recess | 2 at 19mm apart |
| 905E | 905 with step edger | 2 at 19mm apart |