Our products are good in quality and low in price .For button bits, we can offer you: bit diameter(D):32mm嚚�45mm; Taper degree (a):6, 7, 9, 11, 12; socket diameter (d):19mm, 22mm, 25 mm. special sizes of button bits are also available upon your request. Besides, we can supply all kinds of threaded bits like retrac button bits, cross bit and X-type bit. If you are interested in our button bits or other products related to button bits.