Could improve knobs on hob. (Or oven come to that. . .)
4/5
Excellent product BUT: Knobs could be improved by marking them to make POSITION CLEARER!
Fill groove in with RED colouring! This way you can SEE AT A GLANCE position of on/off EASILY. I left one on all night!!!
My knobs are white but same would apply for black/silver.
Jennifer Paton