Adjustable router circle jigs. Available in 2 sizes, kit #1 has a range of from 2.75"-34" circle, kit #2 has a range of 2.75"-50" circle both when using a 1/4" cutter. Each kit includes the main router plate/slide assembly 1 standard pin guide and 1 extended pin guide. The stainless slide is laser marked with 1/32" graduations used as reference marks when making circle size adjustments. The main components are CNC machined from 6061 aluminum with 303 stainless slides and assembled with stainless hardware. These are for full size plunge base routers. Router compatability Porter Cable: PC7529, PC 690 Series, PC 890, PC8529, PC894PK, 8931 Plunge Base - Makita 3612C, 3621, RP1101 - Hitachi: M8V, TR12, M12V, KM12VC - DeWalt: DW315, DW616, DW618, DW621, DW625, DW6182 - Bosch 1613, 1450, RA 1166, 1617/16181, MRC23EVSK 1615, Milwaukee M18 plunge and tigers that share any of the same bolt patterns of these listed.