2-3/8" x 0.4", 1/2" Hex BaneBots Wheel, 2-3/8" x 0.4", 1/2" Hex Mount, 30A, Black/Green $2.75 BaneBots Series 400 Wheel - 2-3/8"dia x 0.4" wide Black PP Core, Soft Green 30 Shore A TPR Tread 1/2" Hex Mount more information / order Code: T40P-243BG-HS4 BaneBots Wheel, 2-3/8" x 0.4", 1/2" Hex Mount, 40A, Black/Orange $2.75 BaneBots Series 400 Wheel - 2-3/8"dia x 0.4" wide Black PP Core, Medium Orange 40 Shore A TPR Tread 1/2" Hex Mount more information / order Code: T40P-244BO-HS4 BaneBots Wheel, 2-3/8" x 0.4", 1/2" Hex Mount, 50A, Black/Blue $2.75 BaneBots Series 400 Wheel - 2-3/8"dia x 0.4" wide Black PP Core, Harder Blue 50 Shore A TPR Tread 1/2" Hex Mount more information / order Code: T40P-245BA-HS4