Stop wasting money on the stock high speed steel tips, upgrade to carbide.  

Fits many name brand mfg which all use same Taiwanese spiral head vendor responsible for making this spiral planer head.

edges : straight (not a radius) with pointed sharp corners  This insert has a straight cutting edge on 2 sides. Fits general and shin max planers . Always double check specs before ordering or installing.

Width=14.3mm

Length =14.3mm

Thickness=2mm

Holes 1 : 6.2mm bore countersunk  opeing at base of insert, 9.5mm at widenst pont of taper at face of insert.

30 degree bevel

Plastic Case includes  10 knives

Also Fits - Cutech Tool Planer / Jointer Models: 40700H-CT, 4700HC-CT, 40100H-CT, 40600H-80100-CT, 40200H-CT, 40600HC-80100-CT, and 40200HC-CT (that have the spiral head). Our knives replace the Cutech knife # 40930 (HSS) and the 40938 Carbide version.