Compatible with Bison models:

BST-27 / 27-12 / 48 / 48-18 / 60 / 60-24 / 72 / 72-30
BUF-27
BUR-27 / 48 / 60 / 72

Dimensions: 3-3/4" W x 3"L

For models produce before 11/19/2015