A400 – These pots are especially designed to cut the bottom side of triple X Excellent stones. Special care has been taken on tolerance-, depth-, and concentric accuracy. The pot is being fitted and fastened straight in the dop-axle to avoid extra fittings, causing possible inaccuracy. Size and depth are made customized to the users needs. For example: diameter size 4,25 mm, depth 15,5%. The unit price is very dependable on the quantity per size ordered.