spring-loaded cylinder 3d model

Create a 3D model of a metal spring-loaded adjustment pin for a telescopic cane tube. • Body: 12 mm diameter, 20 mm long. • Front cylindrical button: 10 mm diameter, 5 mm height. • Internal shaft: 4 mm steel rod, 15 mm long. • Include a small compression spring around the shaft. • Model must be simple, low poly, functional, and compatible with a 6 mm adjustment hole. • Clean topology, smooth edges, and realistic proportions.