This is a used pull, needs to be polished. Can be used as a double or triple - has a main BCD of 110, with threads in the back of the arm for a granny gear. Square taper looks good as do the threads. See photos. Please see the photos. Sold as-is. If you have any questions, please contact me and I will be glad to answer them. PLEASE READ THE FOLLOWING BEFORE BIDDING: Payment is expected within (4) business days. eBay's unpaid item assistant will take over once this time expires.NO sales/shipping outside the USA.KNOW WHAT YOU ARE BUYING - please read the description thoroughly.