Description Expanded size: 52.5cm Shrink size: 24cm Structure: spring mechanical resistance lock Features: All steel material, stainless steel pen buckle. Onebutton spring to open, hexagonal rubber handle, broken window tail vertebra. Alloy steel body (quenched and hardened, fine and durable) Broken window tail vertebra (double the strength of quenched alloy steel) Automatic spring stick (oneclick popup automatic retractable hidden broken window) Portable Pen Buckle (304 Stainless Steel) lockin safety design Lock the swivel buckle when not in use to prevent accidental pressing Oneclick solution of automatic spring stick Oneclick popup, threesection swing stick automatically retracts, concealed broken window, onekey operation Hand feel upgrade nonslip texture Leather texture handle, nonslip and comfortable, effectively increase friction, do not let go Packing list: 1 piece telescopic stick