Amazon.co.jp: Walking Aid, Elderly Roller Adult Walker, Lightweight Adjustable History Walker, Foldable Aluminum Graduated Mobility Aid (Color: 1) : Health & Personal Care
Amazon.co.jp: [Limited Product] Aluminum bearing roller with 19mm pull ring (6 spokes, red) : Hobbies
Amazon.co.jp: 4 x Mini 4WD 13mm Lightweight Aluminum Bearing Roller (Black) : Toys & Games