aluminum crutch (quality type with balls)

AHigh quality aluminum tube with aluminum alloy treatment on surface;
BReinforced central vertical tube provides better support force;
CSpecially designed expansion tube provides more convenience for adjustment;
DTheres rubber tube inside so as to prevent from friction of metal tube.
EAnti-skidding rubber feet-pad with metal gasket inside makes it more durable;
FHigh quality plastic armpit supporting cover makes it more beautiful;
G9 gears for height adjustment. Gear distance (2.5 CM)

SizeS M L XLType Heightcm: S:100-120 M:110-130 L:120-140 XL:130-150