These Spade Type bits are being sold per bit. All shipping will be FREE after the first bit.. I have (13) of the 34 mm bits part #  TD-23 SBD-63623-H  and (20) of the 27 mm bits part # TD-21 SBD-63021-B  The last 2 pictures show measuring tip to tip as  27 and 34 mm (the third and 4th to last pictures show thickness of  4 mm or 0.157" for the 27 mm bits and  4.25mm or 0.167" for the 34 mm bits. I will let you buy a few of one and a few of the other, make me an offer for all of them..I will ship right away.