I started making these for personal use and gifts. My friends and I love them so I am now making them for my shop. Size: I keep Standard size on hand at all times. Any other size will need to be printed per order. Standard - These will fit Class 15, Class 66, 15J, Bernina 0115367000, Viking 4125615-45, and others that measure 20.3-20.5mm (3/4-inch) in diameter and 10.6-11.3mm (2/5-inch) high. P60224 - Singer Sewing Machine Models: 2010, 4613, 4617, 4623, 4663, 6225, 6226, 6227, 2628, 6229, 6230, 6231, 6232, 6234, 6235, 6236, 6237, 6238, 6239, 6240, 6241, 6242, 6243, 6244, 6245, 6246, 6247, 6248, 6249, 6250, 6251, 6253, 6267, 6268, 7000, 7005, 7027, 7037, 7043, 7050, 7057, 7060, 9113, 9117, 9124, 9133, 9137, 9143, 9217, 9224, 9240, 9417, 9900. These measure about 1 inch in diameter and 1/4 inch high. If you have a different size bobbin, please message me and we will discuss custom size orders. Ordering Details: Bobbin Clip - If you order a quantity of 1, you will receive 1 bag with 12 bobbin clips Clip with Spool Insert - When you order 1 you will receive a package with 6 Processing Time: It takes time to print. I carry a stock on hand at all times for the standard size. Small orders can ship in as little as one day. Processing time for larger orders may be extended to accommodate printing time. If you would like more details, please message me. I will extend the processing time to accommodate printing if you have a large order. Important Notes: Bobbins are not included