Wolf shoulder rest for violin. Please understand that this is a used item and may have scratches, rust, etc. The rubber parts are deteriorated, but replacement rubber is also included. I replaced it once, but it requires quite a bit of force, so please be aware of that. Compatible with 4/4-3/4 size. - Brand: WOLF - Model Name: Forte Secondo - Size: 4/4-3/4 Violin - Patent: Patented - Made in the Netherlands Thank you for looking.