Sanitaire vacuum belt. Fits most upright models. Sanitaire belts come bulk as one each. Sanitaire part genuine OEM # 30563B2. Fits the following Sanitaire commercial vacuum models:
SC679
SC684
SC688
SC689
SC695
SC881
SC882
SC883
SC886
SC887
SC888
SC889
SC899
SC9050
S635
S645
S675
S677