The specification of the crutchA. High quality aluminum tube with aluminum alloy treatment on surface; B. Reinforced central vertical tube provides better support force; C. Specially designed expansion tube provides more convenience for adjustment; D. There's rubber tube inside so as to prevent from friction of metal tube. E. Anti-skidding rubber feet-pad with metal gasket inside makes it more durable; F. High quality plastic armpit supporting cover makes it more beautiful; G. 9 gears for height adjustment. Gear distance (2.5 CM)SizeS M L XLType Height(cm): S: 100-120 M: 110-130 L: 120-140 XL: 130-150 Trademark: world Model NO.: TJ109 Productivity: 500pair one month Unit Price/Payment: T/T, L/C Origin: China Packing: Carton Min. Order: 1pair Transportation: Sea Company: Hengshui Tianjian Medical Supplies Co.,Ltd

