Installation Type: M8x15mm Threaded Stem Package Contents: 4 x Screw-in Casters (50mm diameter), 1 x Simple Wrench. For wheel repair of shopping carts, suitcases, carry boxes, etc., caster replacement * Immediate purchase welcome, silent purchase at midnight OK ◎ * First come, first served for only one item * Welcome bulk purchases, please feel free to comment * Free shipping! ・Please understand and purchase as it will be stored at home and shipped in simple packaging (⁎ᵕᴗᵕ⁎) ・Please check the actual photos for the condition of the product♪ ※To keep the price as low as possible, we may ship the item without the box due to shipping costs. BESTU Screw-in Casters, Threaded Casters, Swivel with Stopper, 50mm Swivel, M8 8mm A-type screw-in, Wagon, Shopping Cart, Furniture, Replacement Tire Kit, DIY, Twin Wheel, Hard Rubber Casters, 50 diameter, Set of 4 #Kana's product list is here ✨️☜ ☆48-52☆