This shouder rest is for a fullsize violin. The make is popular. Willy Wolf.
Kun Solo™ shoulder rest for 4/4 violin shoulder rest for 4/4 violin
MOREYES Violin Shoulder Rest for 4/4 and 3/4, Shoulder Rest for Violin with Collapsible and Adjustable Feet, Comfortable Foam Pad and Durable Silicone Claws.
KUN Solo™ shoulder rest for 4/4 violin shoulder rest for 4/4 violin
Fansjoy Violin Shoulder Rest for 1/2 Size Violin, Shoulder Rest for 1/2 Violin with Comfortable Foam Pad & Height Adjustable Feet
Violin Shoulder Rest For 4/4 And 3/4, Shoulder Rest For Violin With Collapsible
Mach One Maple Shoulder Rest for 4/4 and 3/4 Violin, Shoulder Rest