Plastic

The 4 x teeth can be trimmed to make them a 2

Easily cut with sharp scissors.

TBS4 is Length 7 mm x Height 3 mm

TBS6 is Length 11 mm x Height 3 mm

TBL2 is Length 7 mm x Height 5 mm

TBL4 is Length 20mm Height 5 mm

TBL2 comes with a felt tongue 3.75 mm x 20 mm