The Forestry Excavator Pack includes one excavator and a total of seven implements that can be attached to it, as well as many other excavators.
Here are the specs of all things included in the pack:

The Lizard FE350 is a versatile and powerful machine, built to assist you in the forest with moving logs, cutting trees, and digging.
Category: Excavators
Price: $350000
Power: 350 to 410 hp
Max. speed: 10 kph
Capacity: 620 L
Main color configuration
3 crawler track options
Free-swinging excavator attachments (FS25_ExcavatorAttachments) from kenny456 are compatible.

Lizard Digging Bucket
Category: Excavator Tools
Price: $4500
Capacity: 2500 L

Lizard Digging Bucket Wide
Category: Excavator Tools
Price: $5000
Capacity: 4000 L

Lizard Trenching Bucket
Category: Excavator Tools
Price: $2550
Capacity: 1050 L

Lizard Grading Bucket Small
Category: Excavator Tools
Price: $3540
Capacity: 950 L

Lizard Grading Bucket
Category: Excavator Tools
Price: $3540
Capacity: 3700 L

Lizard Grading Bucket
Category: Excavator Tools
Price: $3350
Capacity: 1550 L

Lizard Tilt Rotor
Category: Excavator Tools
Price: $4560

Enjoy!