This is one style of several guard foots located on the sax.

This is on the small key guard on the back Eb/D#.

AD-AS1
YAS-100
YAS-200AD
YAS-200AD(2)
YAS-200DR
YAS-200DT
YAS-23
YAS-23U
YAS-25
YAS-25L
YAS-26
YAS-275
YAS-280
YAS-300AD
YAS-32
YAS-32(2)
YAS-32(2)E
YAS-32F
YAS-380
YAS-475
YAS-480
YAS-52
YAS-52E
YAS-575AL
YAS-580AL
YAS-PLU1
YAS-PLU1(2)
YAS-S1

Yamaha Genuine Part.

This part requires soldering by a professional.