Compatible with Bison models:

BRR-21
BRF-21
BRR-46
BRF-46
BRR-71
BRF-71
BGM-8
BGM-15
BGM-21
BGM-35
BGM-35-SD
BGM-49
BGM-49-SD
BGM-53
BRM-.74
BRM-1.84
BRM-1.41
BRM-2.83
BFM-4
BUR-27
BUF-27
BUR-48
BUF-48
BUR-60
BUF-60
BUR-72
BPT-44
BPT-67
BPT-93
BST-27
BST-27-12
BST-48
BST-48-18
BST-60
BST-60-24
BST-72
BST-72-30

Dimensions: 1-1/4"W x 1-1/3"L