Super-Sensitive from TSP
Left to right in image (left)

H9491 Spector Mute
Positioned between the A & D strings sliding into position as required. That is, on or off position. In brown or black

H9450 Wolf-be-Gone Violin/Viola.
H9451 Wolf-be-Gone Cello.
Wolf note eliminator.

H9480-82-84 Bowmaster
Bowmaster is a teaching aid to assist beginners to develop an accurate bow grip. Rubber, contoured tube, that slides onto the bow. Manufactured to fit different size hands & bows in S,M,L.

H9453 Tone Shaper Bow Guide
Teaching aid to encourage a straight bow technique by forming a physical guide. Uses clear plastic upright guides and fixed with velcro.

H9240-42 Pitch Pipes for violin and viola/cello.
Plastic pipes with brass reeds.

H9454 Stoppin Endpin Stops.
Large. Clear, black, green or blue.
H9452 Stoppin Endpin Stops.
Small. Clear.
Non-slip textured polymer squares to inhibit end pin movement/floor damage. 

H9200 & H9210 Sensor Pick-Up See feature here