NB/ 4 per set
Professional castor for commercial castor has 2 x roller bearings in the centre for maximum strength as well as being able to take a little bit more weight As well as this the roller bearing also allows for less friction to be caused making the trolley or whatever the castors are on e asy to move 360 degree rotation on the castor Double ball bearing swivel head Ideal for a huge variety of uses from DIY to industrial applications Perfect for use on work benches, bookshelves, shopping carts etc... Heavy duty steep plate for strength and durability when attached