The high performance reversible and indexable replacement carbide inserts have 4 cutting edges. And 1 standard hole for locating into your spiral cutter heads or wood turning lathe. The 4 sides are of the same sharpness , its just like 4 sets of knives for your machine. Their solid carbide micro grain tips give superior tool life in a wide variety of materials for all general spiral planer head in hard woods and soft woods, the insert can be used for the heads of your jointer and planer. It will definitely be of great help and your excellent partner for your wood turning work. These carbide inserts are fully boxed in the standard plastic boxes for safe storage and transportation.

• Made of solid tungsten carbide, providing you a better experience and durable use
• Designed for numerous spiral/helical planer cutter head system, DIY wood turning lathe tools
• Easy to replace your jointers and planers, excellent accessory for wood surfacing planing &turning work.
• 4 usable sides(14mm length X14mm width X 2.0 Thick-30* Cutting Angle), and all are of the same sharpness
• If one knife edge is dull or nicked, just turn it to another edge which greatly reduces you down time.

Made of solid tungsten carbide, providing you a better experience and durable useLA HARDWARE INC