This base cap and crown cap moulding bit has a cutting height of 1-5/16" and cutting depth of 3/8". This bit is used to add a cap to base mouldings and can also be paired with a horizontal cove Router bit to create large crown mouldings. 1/2" shank. Pair this bit with one of Yonico's wide horizontal cove router bits to create crown mouldings of up to 5-3/8" wide. This bit can also be used on its own as a base cap moulding bit or a casing bit.