The Triple choice slot head includes both the classical, steel string and vertical template sets. Also included are the 1/4” bushing for the steel string and 13/32” for the classical, bushing centers are 10.5 mm from top of head stock. The vertical templates include 1/4” ID bushing that are pressed into the material. The templates are designed for 1/4” spiral down cur bit using a 3/8” OD template guide and 7/16” OD to remove most of the material. Also available is the accessory kit that has the bit and template guides included.