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 easy 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...