Choosing the perfect Needle. Love this tool and love this on-line store (sewingpartsonline.com). I purchase many items from here and save so much compared to local stores, even with coupons! This is where I get my maxi-lock serger thread Cheap! Also great videos for learning to use different machine feet and decorative sewing. Shipping is free with $75 purchase. Pool your orders with a friend and SAVE!!