To cut groove or dap with either cutterhead :
Bolt holes are already drilled in the wood, insert a PILOT into the cutterhead : (A pilot is simply a guiding or centering device.
Replacement cutter blade sets are available for all cutterheads.
All pilots have 1/2" machine shank for use in power drill.
The cutterhead can be used in heavy duty 3/4" power drill with a torsion bar or in a drill press with minimum 1/2" chuck to cut grooves and daps for TECO split rings.