4-Sections Aluminum Telescoping Handle: Constructed of reinforced aluminum handle and reinforced telescoping joints for easy transport and storage, the measurement wheel was designed for extreme durability and a longer product life. 40inches/101cm at full extension, collapses to 16 inches/41cm. ABS+TPR Housing Wheel: Firecore wheel measurement roller features a wide tread wheel and shock-absorbing TPR rubber housing for excellent surface grip and superb traction on job sites with uneven terrain or long indoor expanses, making it ideal for use in external as well as internal environments. Gear-Driven Counter: Features 4-digit counter with a manual reset button, Firecore measuring wheels measurement range is 999ft. Idea for measuring vertical, horizontal or curved surfaces, the walking tape measure wheel displays distance in feet inches for quick, accurate distance calculations. Ergonomic Over-Mold Rubber Grip: Overmolded TPR rubber grip handle for increased user comfort and productivity. The walking tape measure wheel 4 inch comes with a storage bag to safely store away the wheel, as well as aid in portability. Vertical Positioning Pin: For point-to-point measurement and measurement from the wall to the next certain point. Move the measure wheel until the point pointed by the pin coincides with the end point. Plus the diameter or radius of the wheel if starting or final measuring point is on the corner.