Speed Sensor Yellow Softballs
MarkWort Speed Sensor 12 Softball - Yellow Cover - BBSPEEDSY__N/
Measure distance between pitcher and catcher with included measuring string and choose one of the predetermined distances into Speed Sensor.
Merchant: eCost
MarkWort 11" Synthetic Leather Cover Yellow Softballs - BBSPEED1
Measure distance between pitcher and catcher with included measuring string and choose one of the predetermined distances into Speed Sensor.
Merchant: eCost