Electrician's Box Sinker
I use a 22mm SDS gouge, from Axminster. It is as you describe, does
the channelling beautifully, and cost £4.95.
Do you mean this?
Axminster Power tools SDS Accessories
G310B4 20mm SDS Channelling Chisel £24.31 excl VAT £28.56 incl VAT
|