Valve seat 45°cutter head 2 1/4" diameter(57.15mm)Approx. range: 2.150"-2.300"(54 - 58mm) to be used with 3/8" top Neway pilots, specially engineered for the "new3Acut" 3 angle cut blades, to cut 3 angles in one pass! Serdi style 30/45/60 do all 3 angles with one cutter head, save time and save on tooling. This cutter head takes 7 blades ( it can be used like a single angle cutter head), These cutters are to be driven by a powered machine when used with 3 angle profile blades, when used with serrated blades, a "T" handle can be used to drive cutters, tool steel hub, black oxide finish.
"Cam lock" holding screw, 1/2" drive, requires 5 blades, 1/2" long recommended.
The listing is for one cutter head, blades shown on pictures are not included,