Compatible with Einhell GC-PC2040 chainsaw (doesn't fit Einhell GC-PC2040 I), LUX BKS-45/45MM chainsaw and many other chainsaws with 45 - 52 ccm Hole diameter: 5,5 mm Distance between holes center to center (horizontal): 164 mm (top); 111 mm (bottom) Distance between holes (vertical): 94 mm (right), 85 mm (left)