Heavy Duty Ring Rounding Stretcher Enlarger Expander Sizer Machine w/ 12 Collets Heavy duty ring expander w/ 12 collets Comes with 12 collets Size of collets unit comes with: (2)-1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 Extremely easily to use; Weight: 23 lbs Quantity: 1; Overall dimension: 5-1/2''L x 9''W x 15''H