12ft by 1/2" Retractable Tape Measure, Thumb Lock & Belt Clip, Stud Marks 16" 
Product Details: 
- Notch for measuring on wire or string
- Reinforced end hook for true zero measurement
- Red stud every 16"
- Thumb lock
- 12' by 1/2" wide
- Belt Clip 
 Product Description: 
This 12 ft retractable tape measure has an exclusive blade for controlled measuring. You can use this for construction, carpentry, work, or for your household. It has a sliding thumb lock, red stud marking every 16", a tripe reinforced hook for true zero measurement, and a notch for measuring on wire or string.