# Pro-Form 680 CrossTrainer Treadmill Safety Key Lanyard (SK251)
The Pro-Form 680 CrossTrainer Treadmill Safety Key Lanyard is a replacement safety key lanyard for the Pro-Form 680 CrossTrainer treadmill. It helps replace the original lanyard when it has been lost, damaged, or is no longer available for use. If you need a safety key lanyard for this specific Pro-Form treadmill model, this part is identified by SKU SK251.
Product Details and Benefits
This product belongs to the safety key category and is made for use with the safety-key system on a Pro-Form 680 CrossTrainer treadmill. A treadmill safety key and lanyard are important parts of the equipment’s user-safety setup. The lanyard provides the connection associated with the safety key, helping the user keep the key available while using the treadmill.
Replacing a missing or worn lanyard can help restore the original safety-key arrangement on compatible equipment. It also provides a practical replacement when the existing lanyard has become damaged or is no longer suitable for regular use. Because this item is listed specifically for the Pro-Form 680 CrossTrainer treadmill, it gives buyers a clear part reference when searching for a replacement.
The product name is **Pro-Form 680 CrossTrainer Treadmill Safety Key Lanyard**, and the listed part identifier is **SK251**. The brand/vendor is **ProForm**. These details can help you compare the item with the part currently installed on your treadmill or with the information shown in your equipment documentation.
Compatibility and Applications
The SK251 safety key lanyard is listed for the following equipment:
- **Brand:** ProForm
- **Compatible treadmill:** Pro-Form 680 CrossTrainer
- **Equipment type:** Treadmill
- **Part category:** Safety key lanyard
- **SKU/part number:** SK251
This replacement part is intended for the Pro-Form 680 CrossTrainer treadmill named above. It is suitable for customers replacing the safety key lanyard connected with that treadmill’s safety-key system. The product page does not provide a broader compatibility list, so buyers should not assume that SK251 fits other ProForm, Pro-Form, or CrossTrainer treadmill models.
## Why Choose This Replacement Part?
The main reason to choose the SK251 is its specific listing for the Pro-Form 680 CrossTrainer treadmill. Matching the replacement part to the equipment name and part number can make it easier to identify the correct item before ordering. It may also help avoid choosing a lanyard intended for a different treadmill model.
A replacement lanyard can be useful when the original part is missing, damaged, or needs replacement while the treadmill remains in service. Use the product name and SKU together when checking your records, existing safety-key assembly, or previous parts order.
Before You Buy
Confirm that your treadmill is the **Pro-Form 680 CrossTrainer** and that the required part number is **SK251**. The available product information does not specify dimensions, material, color, package quantity, installation instructions, warranty, or compatibility with additional models. If your treadmill has a different model name or number, verify compatibility before placing an order.