For aluminum T-slot, please visit following links:

For 300mm T-Slot : http://www.ebay.com/itm/232073334126?

For 400mm T-Slot:  http://www.ebay.com/itm/232075684673?

For 600mm T-Slot:  http://www.ebay.com/itm/232073321716?

For 800mm T-Slot: http://www.ebay.com/itm/-/232093655329?

For different length of aluminum sliding slab/ block please visit following links: 

For 450mm sliding slab: http://www.ebay.com/itm/232075732276?

For 650mm sliding slab: http://www.ebay.com/itm/232075736745?

For T-Slot Stopper, please visit: 

 http://www.ebay.com/itm/232087569249?  ( for 5 pcs )

http://www.ebay.com/itm/232088558378? (1pcs only)