Check the listing for details. SINGER 2139 Class 66 Bobbins, Metal, 4-Count. Color: Metal, Condition: New. Listed at 8.89 USD. SINGER 2139 Class 66 Bobbins, Metal, 4-Count Features Set of 4 class 66 metal bobbins Class 66 bobbins are compatible with many SINGER models 66-1 through 66-18, 99CL, 185, 192, 201, 609, 717 and other top drop-in bobbin sewing machines Never add thread to a partially wound bobbin as it may be uneven and cause thread to tangle or break Description This set of 4 class 66 metal bobbins serve as replacements for the following compatible machines: brands compatible with Singer models 66-1 through 66-18, 99CL, 185, 192, 201, 609, 717, and other top drop-in bobbin sewing machines. Consult your machine’s manual to ensure correct bobbin size. Use the bobbins beneath the needle plate in automatic sewing machines to wind the thread for your embroidery projects. Never add thread to a partially wound bobbin, as it may be uneven and cause thread to tangle or break. Payment We accept all major credit cards and PayPal. Shipping Free Shipping anywhere in the Continental United States. Please be certain your shipping address is correct as this cannot be changed once the order has been placed. Returns Should you need to return your purchase, we allow returns that are processed within 30 days of receipt of the order. Please contact us for a return authorization and the return shipping address.