Placed underneath your's string on your violin,this your bridge,making t last longer,stopping ,could also increase a better tone and prevent buzzing. Bridge Pads For Violin: When using, use a thin needle-like wire to apply half of it with a little glue, half on , then stick the other half E1a string bridge pads-- it is simple in design but very practical to use and gives you a good experience. Violin string pads-- the cello enthusiast or player. it can be as a spare string pad in a cello bag. Colour:As Shown Material:PU Type:B:Violin bridge protection pad Package Contents: 10x String Protectors Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.