Fits straight away on the cross slide of the 7 x 14 & similar size mini lathes. Comes with 2 x Carbide Cutting Inserts with 3 cutting edges Adjustable head for various sizes balls maximum upto 50 mm diameter. Used a bearing base for smooth rotation, which is an exclusive feature on this newly designed tool by A.D International Tools Co. Turns Concave & Convex Metal Balls easily. This is world's 1st & exclusive direct fit ball turning attachment for a Mini lathe. Check out its working video on below weblink. The 2 x aluminum balls shown in the image are not for SALE !!- This are shown for the customer's reference for illustration purpose since these are being turned using this attachment on our CJ18A 7 x 14 mini lathe Example- If you set the scale at a measurement of 15 mm, you will get a ball size of diameter 30 mm. The attachment has both Imperial as well as Metric graduations on either size of the attachment., Weight: 1.763698096 pounds, Manufacturer: ADI