Scene, plastic adjust a foot, USES the high quality ABS material, hardness is strong, prevent slippery, wear, bearing force, specifications qi, the price is with preferential treatment, used to adapt to all kinds of industry, professional to provide fixed adjust a foot, universal joints, adjust a foot, joints, hooves, specifications have 30 party 38 party Φ 38 40 square Φ 42 Φ 50 50 square Φ 60, 60 Φ Φ Φ 110 90 76