Perhaps this isn't a strange metal object as such.
But it is so nicley packaged and a nice weight.
It includes instructions too.
HOW TO USE DECRA-LED COILS
1.Unroll face down and brush cement thinly over surface.
2.You may cement all required lead at same time but allow one hour to become tacky.
3.Peel off each strip as required and pull taut holding each end.
Press starting end firmly against glass and guide strip into position with other hand.
4.Using Boning Peg along surface....
there are 3 more steps but I don't want to give all the secrets away.